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428
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1 /* Implements a lightweight scrollbar widget.
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2 Copyright (C) 1992, 1993, 1994 Lucid, Inc.
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3 Copyright (C) 1997 Sun Microsystems, Inc.
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4
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5 This file is part of the Lucid Widget Library.
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6
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7 The Lucid Widget Library is free software; you can redistribute it and/or
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8 modify it under the terms of the GNU General Public License as published by
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9 the Free Software Foundation; either version 2, or (at your option)
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10 any later version.
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11
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12 The Lucid Widget Library is distributed in the hope that it will be useful,
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13 but WITHOUT ANY WARRANTY; without even the implied warranty of
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14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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15 GNU General Public License for more details.
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16
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17 You should have received a copy of the GNU General Public License
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18 along with XEmacs; see the file COPYING. If not, write to
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19 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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20 Boston, MA 02111-1307, USA. */
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21
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22 /* Created by Douglas Keller <dkeller@vnet.ibm.com> */
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23 /* Lots of hacking by Martin Buchholz */
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24
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25 /*
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26 * Athena-style scrollbar button bindings added on Sun Dec 24 22:03:57 1995
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27 * by Jonathan Stigelman <Stig@hackvan.com>... Ho ho ho!
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28 *
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1389
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29 * To use them, put this resource in your .Xresources
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428
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30 *
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31 * Emacs*XlwScrollBar.translations: #override \n\
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32 * <Btn1Down>: PageDownOrRight() \n\
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766
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33 * <Btn3Down>: PageUpOrLeft() \n\
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34 * <Btn3Up>: Release()
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428
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35 *
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36 */
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37
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38 /*
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39 * Resources Supported:
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40 * XmNforeground
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41 * XmNbackground
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42 * XmNtopShadowColor
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43 * XmNtopShadowPixmap
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44 * XmNbottomShadowColor
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45 * XmNbottomShadowPixmap
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46 * XmNtroughColor
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47 * XmNshadowThickness
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48 * XmNshowArrows
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49 * XmNorientation
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50 * XmNborderWidth
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51 *
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52 * XmNminimum
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53 * XmNmaximum
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54 * XmNvalue
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55 * XmNincrement
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56 * XmNpageIncrement
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57 *
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58 * XmNvalueChangedCallback
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59 * XmNincrementCallback
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60 * XmNdecrementCallback
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61 * XmNpageIncrementCallback
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62 * XmNpageDecrementCallback
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63 * XmNtoTopCallback
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64 * XmNtoBottomCallback
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65 * XmNdragCallback
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66 *
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67 * XmNsliderStyle - values can be: "plain" or "dimple"
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68 * XmNarrowPosition - values can be: "opposite" or "same"
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69 *
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70 */
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71
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72 #include <config.h>
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73 #include <stdio.h>
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74 #include <stdlib.h>
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75 #include <limits.h>
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76
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77 #include <X11/IntrinsicP.h>
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78 #include <X11/StringDefs.h>
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79 #include <X11/bitmaps/gray>
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80
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81 #include "xlwscrollbarP.h"
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82 #include "xlwscrollbar.h"
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83
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84 #ifdef USE_DEBUG_MALLOC
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85 #include <dmalloc.h>
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86 #endif
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87
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88 #define DBUG(x)
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89
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90 #define MINL(x,y) ((((unsigned long) (x)) < ((unsigned long) (y))) \
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91 ? ((unsigned long) (x)) : ((unsigned long) (y)))
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92
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93 #define VERT(w) ((w)->sb.orientation == XmVERTICAL)
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94
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95 #define SS_MIN 8
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96
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97 typedef enum
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98 {
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99 BUTTON_NONE,
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100 BUTTON_SLIDER,
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101 BUTTON_UP_ARROW,
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102 BUTTON_DOWN_ARROW,
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103 BUTTON_TROUGH_ABOVE,
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104 BUTTON_TROUGH_BELOW
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105 } button_where;
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106
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107 typedef enum
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108 {
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109 SLIDER_PLAIN,
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110 SLIDER_DIMPLE
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111 } SliderStyle;
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112
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113 /*-------------------------- Resources ----------------------------------*/
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114 #define offset(field) XtOffset(XlwScrollBarWidget, field)
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115
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116 static XtResource resources[] = {
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117 { XmNforeground, XmCForeground, XtRPixel, sizeof(Pixel),
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118 offset(sb.foreground), XtRImmediate, (XtPointer) XtDefaultForeground },
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119
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120 { XmNtopShadowColor, XmCTopShadowColor, XtRPixel,
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121 sizeof(Pixel), offset(sb.topShadowColor), XtRImmediate, (XtPointer) ~0 },
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122 { XmNbottomShadowColor, XmCBottomShadowColor, XtRPixel,
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123 sizeof(Pixel), offset(sb.bottomShadowColor), XtRImmediate,
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124 (XtPointer)~0 },
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125
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126 { XmNtopShadowPixmap, XmCTopShadowPixmap, XtRPixmap,
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127 sizeof (Pixmap), offset(sb.topShadowPixmap), XtRImmediate,
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128 (XtPointer)None},
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129 { XmNbottomShadowPixmap, XmCBottomShadowPixmap,
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130 XtRPixmap, sizeof (Pixmap), offset(sb.bottomShadowPixmap),
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131 XtRImmediate, (XtPointer)None},
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132
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133 { XmNtroughColor, XmCTroughColor, XtRPixel, sizeof(Pixel),
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134 offset(sb.troughColor), XtRImmediate, (XtPointer)~0 },
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135
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136 { XmNshadowThickness, XmCShadowThickness, XtRInt,
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137 sizeof(int), offset(sb.shadowThickness), XtRImmediate, (XtPointer)2 },
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138
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139 { XmNborderWidth, XmCBorderWidth, XtRDimension,
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140 sizeof(Dimension), offset(core.border_width), XtRImmediate,
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141 (XtPointer)0 },
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142
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143 { XmNshowArrows, XmCShowArrows, XtRBoolean,
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144 sizeof(Boolean), offset(sb.showArrows), XtRImmediate, (XtPointer)True },
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145
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146 { XmNinitialDelay, XmCInitialDelay, XtRInt, sizeof(int),
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147 offset(sb.initialDelay), XtRImmediate, (XtPointer) 250 },
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148 { XmNrepeatDelay, XmCRepeatDelay, XtRInt, sizeof(int),
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149 offset(sb.repeatDelay), XtRImmediate, (XtPointer) 50 },
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150
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151 { XmNorientation, XmCOrientation, XtROrientation,
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152 sizeof(unsigned char), offset(sb.orientation), XtRImmediate,
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153 (XtPointer) XmVERTICAL },
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154
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155 { XmNminimum, XmCMinimum, XtRInt, sizeof(int),
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156 offset(sb.minimum), XtRImmediate, (XtPointer) 0},
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157 { XmNmaximum, XmCMaximum, XtRInt, sizeof(int),
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158 offset(sb.maximum), XtRImmediate, (XtPointer) 100},
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159 { XmNvalue, XmCValue, XtRInt, sizeof(int),
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160 offset(sb.value), XtRImmediate, (XtPointer) 0},
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161 { XmNsliderSize, XmCSliderSize, XtRInt, sizeof(int),
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162 offset(sb.sliderSize), XtRImmediate, (XtPointer) 10},
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163 { XmNincrement, XmCIncrement, XtRInt, sizeof(int),
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164 offset(sb.increment), XtRImmediate, (XtPointer) 1},
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165 { XmNpageIncrement, XmCPageIncrement, XtRInt, sizeof(int),
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166 offset(sb.pageIncrement), XtRImmediate, (XtPointer) 10},
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167
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168 { XmNvalueChangedCallback, XmCValueChangedCallback,
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169 XtRCallback, sizeof(XtPointer), offset(sb.valueChangedCBL),
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170 XtRCallback, NULL},
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171 { XmNincrementCallback, XmCIncrementCallback,
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172 XtRCallback, sizeof(XtPointer), offset(sb.incrementCBL),
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173 XtRCallback, NULL},
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174 { XmNdecrementCallback, XmCDecrementCallback,
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175 XtRCallback, sizeof(XtPointer), offset(sb.decrementCBL),
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176 XtRCallback, NULL},
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177 { XmNpageIncrementCallback, XmCPageIncrementCallback,
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178 XtRCallback, sizeof(XtPointer), offset(sb.pageIncrementCBL),
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179 XtRCallback, NULL},
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180 { XmNpageDecrementCallback, XmCPageDecrementCallback,
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181 XtRCallback, sizeof(XtPointer), offset(sb.pageDecrementCBL),
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182 XtRCallback, NULL},
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183 { XmNtoTopCallback, XmCToTopCallback, XtRCallback,
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184 sizeof(XtPointer), offset(sb.toTopCBL), XtRCallback, NULL},
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185 { XmNtoBottomCallback, XmCToBottomCallback, XtRCallback,
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186 sizeof(XtPointer), offset(sb.toBottomCBL), XtRCallback, NULL},
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187 { XmNdragCallback, XmCDragCallback, XtRCallback,
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188 sizeof(XtPointer), offset(sb.dragCBL), XtRCallback, NULL},
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189
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190 /* "knob" is obsolete; use "slider" instead. */
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191 { XmNsliderStyle, XmCSliderStyle, XtRString, sizeof(char *),
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192 offset(sb.sliderStyle), XtRImmediate, NULL},
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193 { XmNknobStyle, XmCKnobStyle, XtRString, sizeof(char *),
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194 offset(sb.knobStyle), XtRImmediate, NULL},
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195
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196 { XmNarrowPosition, XmCArrowPosition, XtRString, sizeof(char *),
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197 offset(sb.arrowPosition), XtRImmediate, NULL},
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198 };
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199
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200 /*-------------------------- Prototypes ---------------------------------*/
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201
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202 /* Actions */
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203 typedef void Action(Widget w, XEvent *event, String *parms, Cardinal *num_parms);
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204 static Action Select, PageUpOrLeft, PageDownOrRight, Drag, Release, Jump, Abort;
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205
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206 /* Methods */
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207 static void Initialize(Widget treq, Widget tnew, ArgList args, Cardinal *num_args);
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208 static Boolean SetValues(Widget current, Widget request, Widget nw, ArgList args, Cardinal *num_args);
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209 static void Destroy(Widget widget);
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210 static void Redisplay(Widget widget, XEvent *event, Region region);
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211 static void Resize(Widget widget);
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212 static void Realize(Widget widget, XtValueMask *valuemask, XSetWindowAttributes *attr);
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213
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214 /* Private */
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215
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216 /*-------------------------- Actions Table ------------------------------*/
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217 static XtActionsRec actions[] =
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218 {
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219 {"Select", Select},
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220 {"PageDownOrRight", PageDownOrRight},
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221 {"PageUpOrLeft", PageUpOrLeft},
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222 {"Drag", Drag},
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223 {"Release", Release},
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224 {"Jump", Jump},
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225 {"Abort", Abort},
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226 };
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227
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228 /*--------------------- Default Translation Table -----------------------*/
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229 static char default_translations[] =
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230 "<Btn1Down>: Select()\n"
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231 "<Btn1Motion>: Drag()\n"
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232 "<Btn1Up>: Release()\n"
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233 "<Btn2Down>: Jump()\n"
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234 "<Btn2Motion>: Drag()\n"
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235 "<Btn2Up>: Release()\n"
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236 "<Key>Delete: Abort()"
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237 ;
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238
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239 /*------------------- Class record initialization -----------------------*/
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240 XlwScrollBarClassRec xlwScrollBarClassRec = {
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241 /* core_class fields */
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242 {
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243 /* superclass */ (WidgetClass) &coreClassRec,
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244 /* class_name */ "XlwScrollBar",
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245 /* widget_size */ sizeof(XlwScrollBarRec),
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246 /* class_initialize */ NULL,
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247 /* class_part_init */ NULL,
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248 /* class_inited */ False,
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249 /* initialize */ Initialize,
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250 /* initialize_hook */ NULL,
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251 /* realize */ Realize,
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252 /* actions */ actions,
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253 /* num_actions */ XtNumber(actions),
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254 /* resources */ resources,
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255 /* num_resources */ XtNumber(resources),
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256 /* xrm_class */ NULLQUARK,
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257 /* compress_motion */ True,
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258 /* compress_exposure */ XtExposeCompressMultiple,
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259 /* compress_enterleave */ True,
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260 /* visible_interest */ False,
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261 /* destroy */ Destroy,
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262 /* resize */ Resize,
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263 /* expose */ Redisplay,
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264 /* set_values */ SetValues,
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265 /* set_values_hook */ NULL,
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266 /* set_values_almost */ XtInheritSetValuesAlmost,
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267 /* get_values_hook */ NULL,
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268 /* accept_focus */ NULL,
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269 /* version */ XtVersionDontCheck,
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270 /* callback_private */ NULL,
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271 /* tm_table */ default_translations,
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272 /* query_geometry */ NULL,
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273 },
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274 /* scrollbar_class fields */
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275 {
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276 /* dummy_field */ 0,
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277 },
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278 };
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279
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280 WidgetClass xlwScrollBarWidgetClass = (WidgetClass) &xlwScrollBarClassRec;
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281
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282 /*-------------------------- Debug Functions ----------------------------*/
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283
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284 #ifdef SHOW_CLEAR
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285 static void
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286 myXClearArea(Display *dpy, Drawable d, int x, int y, int w, int h,
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287 Boolean exp, XlwScrollBarWidget widget)
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288 {
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289 XFillRectangle (dpy, d, widget->sb.topShadowGC, x, y, w, h);
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290 XSync (dpy, False);
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291 sleep (2);
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292 XClearArea (dpy, d, x, y, w, h, exp);
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293 }
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294
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295 #define XClearArea(dpy,win,x,y,width,height,exp) myXClearArea(dpy,win,x,y,width,height,exp,w)
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296 #endif
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297
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298 #ifdef CHECK_VALUES
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299 static void
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300 check(XlwScrollBarWidget w)
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301 {
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302 int height = widget_h (w);
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303 if (w->sb.showArrows)
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304 height -= (2 * arrow_h (w));
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305
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306 if ((w->sb.above + w->sb.ss + w->sb.below > height) ||
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307 (w->sb.value < w->sb.minimum) ||
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308 (w->sb.value > w->sb.maximum - w->sb.sliderSize))
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309 {
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310 printf("above=%d ss=%d below=%d height=%d\n",
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311 w->sb.above, w->sb.ss, w->sb.below, height);
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312 printf("value=%d min=%d max=%d ss=%d max-ss=%d\n",
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313 w->sb.value, w->sb.minimum, w->sb.maximum,
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314 w->sb.sliderSize, w->sb.maximum - w->sb.sliderSize);
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315 abort();
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316 }
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317 }
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318
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319 # define CHECK(w) check(w)
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320 #else
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321 # define CHECK(w)
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322 #endif
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323
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324 /*-------------------------- Static functions ---------------------------*/
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325
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326 static void
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327 call_callbacks (XlwScrollBarWidget w, int reason,
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328 int value, int pixel, XEvent *event)
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329 {
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330 XlwScrollBarCallbackStruct cbs;
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331 Boolean called_anything;
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332
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333 cbs.reason = reason;
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334 cbs.event = event;
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335 cbs.value = value;
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336 cbs.pixel = pixel;
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337
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338 called_anything = False;
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339
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340 switch (reason)
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341 {
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342 case XmCR_VALUE_CHANGED:
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343 XtCallCallbackList ((Widget) w, w->sb.valueChangedCBL, &cbs);
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344 called_anything = True;
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345 break;
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346 case XmCR_INCREMENT:
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347 if (w->sb.incrementCBL)
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348 {
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349 XtCallCallbackList ((Widget) w, w->sb.incrementCBL, &cbs);
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350 called_anything = True;
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351 }
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352 break;
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353 case XmCR_DECREMENT:
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354 if (w->sb.decrementCBL)
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355 {
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356 XtCallCallbackList ((Widget) w, w->sb.decrementCBL, &cbs);
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357 called_anything = True;
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358 }
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359 break;
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360 case XmCR_PAGE_INCREMENT:
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361 if (w->sb.incrementCBL)
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362 {
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363 XtCallCallbackList ((Widget) w, w->sb.pageIncrementCBL, &cbs);
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364 called_anything = True;
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365 }
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366 break;
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367 case XmCR_PAGE_DECREMENT:
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368 if (w->sb.decrementCBL)
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369 {
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370 XtCallCallbackList ((Widget) w, w->sb.pageDecrementCBL, &cbs);
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371 called_anything = True;
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372 }
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373 break;
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374 case XmCR_TO_TOP:
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375 if (w->sb.toTopCBL)
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376 {
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377 XtCallCallbackList ((Widget) w, w->sb.toTopCBL, &cbs);
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378 called_anything = True;
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379 }
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380 break;
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381 case XmCR_TO_BOTTOM:
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382 if (w->sb.toBottomCBL)
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383 {
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|
|
384 XtCallCallbackList ((Widget) w, w->sb.toBottomCBL, &cbs);
|
|
|
385 called_anything = True;
|
|
|
386 }
|
|
|
387 break;
|
|
|
388 case XmCR_DRAG:
|
|
|
389 if (w->sb.dragCBL)
|
|
|
390 {
|
|
|
391 XtCallCallbackList ((Widget) w, w->sb.dragCBL, &cbs);
|
|
|
392 }
|
|
|
393 called_anything = True; /* Special Case */
|
|
|
394 break;
|
|
|
395 }
|
|
|
396
|
|
|
397 if (!called_anything)
|
|
|
398 {
|
|
|
399 cbs.reason = XmCR_VALUE_CHANGED;
|
|
|
400 XtCallCallbackList ((Widget) w, w->sb.valueChangedCBL, &cbs);
|
|
|
401 }
|
|
|
402 }
|
|
|
403
|
|
|
404 /* Widget sizes minus the shadow and highlight area */
|
|
|
405
|
|
|
406 static int
|
|
|
407 widget_x (XlwScrollBarWidget w)
|
|
|
408 {
|
|
|
409 return w->sb.shadowThickness;
|
|
|
410 }
|
|
|
411
|
|
|
412 static int
|
|
|
413 widget_y (XlwScrollBarWidget w)
|
|
|
414 {
|
|
|
415 return w->sb.shadowThickness;
|
|
|
416 }
|
|
|
417
|
|
|
418 static int
|
|
|
419 widget_w (XlwScrollBarWidget w)
|
|
|
420 {
|
|
|
421 int x = w->sb.shadowThickness;
|
|
|
422 int width = (VERT (w) ? w->core.width : w->core.height) - (2 * x);
|
|
|
423 return width > 1 ? width : 1;
|
|
|
424 }
|
|
|
425
|
|
|
426 static int
|
|
|
427 widget_h (XlwScrollBarWidget w)
|
|
|
428 {
|
|
|
429 int y = w->sb.shadowThickness;
|
|
|
430 int height = (VERT (w) ? w->core.height : w->core.width) - (2 * y);
|
|
|
431
|
|
|
432 return height > 1 ? height : 1;
|
|
|
433 }
|
|
|
434
|
|
|
435 static int
|
|
|
436 arrow_h (XlwScrollBarWidget w)
|
|
|
437 {
|
|
|
438 int width = widget_w (w);
|
|
|
439 int minimum_size = ((widget_h (w) - SS_MIN) / 2) - 1;
|
|
|
440 return minimum_size < width ? minimum_size : width;
|
|
|
441 }
|
|
|
442
|
|
|
443 static int
|
|
|
444 event_x (XlwScrollBarWidget w, XEvent *event)
|
|
|
445 {
|
|
|
446 return VERT (w) ? event->xbutton.x : event->xbutton.y;
|
|
|
447 }
|
|
|
448
|
|
|
449 static int
|
|
|
450 event_y (XlwScrollBarWidget w, XEvent *event)
|
|
|
451 {
|
|
|
452 return VERT (w) ? event->xbutton.y : event->xbutton.x;
|
|
|
453 }
|
|
|
454
|
|
|
455 /* Safe addition and subtraction */
|
|
|
456 static void
|
|
|
457 increment_value (XlwScrollBarWidget w, int diff)
|
|
|
458 {
|
|
|
459 w->sb.value = w->sb.maximum - diff < w->sb.value ?
|
|
|
460 w->sb.maximum :
|
|
|
461 w->sb.value + diff;
|
|
|
462 }
|
|
|
463
|
|
|
464 static void
|
|
|
465 decrement_value (XlwScrollBarWidget w, int diff)
|
|
|
466 {
|
|
|
467 w->sb.value = w->sb.minimum + diff > w->sb.value ?
|
|
|
468 w->sb.minimum :
|
|
|
469 w->sb.value - diff;
|
|
|
470 }
|
|
|
471
|
|
|
472 static SliderStyle
|
|
|
473 slider_style (XlwScrollBarWidget w)
|
|
|
474 {
|
|
|
475 return (w->sb.sliderStyle ? w->sb.sliderStyle[0] == 'd' :
|
|
|
476 w->sb.knobStyle ? w->sb.knobStyle[0] == 'd' :
|
|
|
477 0) ?
|
|
|
478 SLIDER_DIMPLE :
|
|
|
479 SLIDER_PLAIN;
|
|
|
480 }
|
|
|
481
|
|
|
482 static Boolean
|
|
|
483 arrow_same_end (XlwScrollBarWidget w)
|
|
|
484 {
|
|
|
485 return w->sb.arrowPosition && w->sb.arrowPosition[0] == 's' ? True : False;
|
|
|
486 }
|
|
|
487
|
|
|
488 /*-------------------------- GC and Pixel allocation --------------------*/
|
|
|
489 #ifndef XmUNSPECIFIED_PIXMAP
|
|
|
490 #define XmUNSPECIFIED_PIXMAP 2
|
|
|
491 #endif
|
|
|
492
|
|
|
493 static GC
|
|
|
494 get_gc (XlwScrollBarWidget w, Pixel fg, Pixel bg, Pixmap pm)
|
|
|
495 {
|
|
|
496 XGCValues values;
|
|
|
497 XtGCMask mask;
|
|
|
498
|
|
|
499 if (pm == w->sb.grayPixmap)
|
|
|
500 {
|
|
|
501 /* If we're using the gray pixmap, guarantee white on black ...
|
|
|
502 * otherwise, we could end up with something odd like grey on white
|
|
|
503 * when we're on a color display that ran out of color cells
|
|
|
504 */
|
|
|
505
|
|
|
506 fg = WhitePixelOfScreen (DefaultScreenOfDisplay (XtDisplay (w)));
|
|
|
507 bg = BlackPixelOfScreen (DefaultScreenOfDisplay (XtDisplay (w)));
|
|
|
508 }
|
|
|
509
|
|
|
510 values.foreground = fg;
|
|
|
511 values.background = bg;
|
|
|
512 values.fill_style = FillOpaqueStippled;
|
|
|
513 values.stipple = pm;
|
|
|
514 /* mask = GCForeground | GCBackground |
|
|
|
515 (pm == None ? 0 : GCStipple | GCFillStyle); gtb */
|
|
|
516 if (pm != None && pm != 0 && pm != XmUNSPECIFIED_PIXMAP)
|
|
|
517 values.stipple = pm;
|
|
|
518 else
|
|
|
519 values.stipple = None;
|
|
|
520 mask = GCForeground | GCBackground |
|
|
|
521 (values.stipple == None ? 0 : GCStipple | GCFillStyle);
|
|
|
522
|
|
|
523 return XtGetGC((Widget) w, mask, &values);
|
|
|
524 }
|
|
|
525
|
|
|
526 /* Replacement for XAllocColor() that tries to return the nearest
|
|
|
527 available color if the colormap is full. From FSF Emacs. */
|
|
|
528
|
|
|
529 static int
|
|
|
530 allocate_nearest_color (Display *display, Colormap screen_colormap,
|
|
|
531 XColor *color_def)
|
|
|
532 {
|
|
|
533 int status = XAllocColor (display, screen_colormap, color_def);
|
|
|
534 if (status)
|
|
|
535 return status;
|
|
|
536
|
|
|
537 {
|
|
|
538 /* If we got to this point, the colormap is full, so we're
|
|
|
539 going to try to get the next closest color.
|
|
|
540 The algorithm used is a least-squares matching, which is
|
|
|
541 what X uses for closest color matching with StaticColor visuals. */
|
|
|
542
|
|
|
543 int nearest, x;
|
|
|
544 unsigned long nearest_delta = ULONG_MAX;
|
|
|
545
|
|
|
546 int no_cells = XDisplayCells (display, XDefaultScreen (display));
|
|
|
547 /* Don't use alloca here because lwlib doesn't have the
|
|
|
548 necessary configuration information that src does. */
|
|
|
549 XColor *cells = (XColor *) malloc (sizeof (XColor) * no_cells);
|
|
|
550
|
|
|
551 for (x = 0; x < no_cells; x++)
|
|
|
552 cells[x].pixel = x;
|
|
|
553
|
|
|
554 XQueryColors (display, screen_colormap, cells, no_cells);
|
|
|
555
|
|
|
556 for (nearest = 0, x = 0; x < no_cells; x++)
|
|
|
557 {
|
|
|
558 long dred = (color_def->red >> 8) - (cells[x].red >> 8);
|
|
|
559 long dgreen = (color_def->green >> 8) - (cells[x].green >> 8);
|
|
|
560 long dblue = (color_def->blue >> 8) - (cells[x].blue >> 8);
|
|
|
561 unsigned long delta = dred * dred + dgreen * dgreen + dblue * dblue;
|
|
|
562
|
|
|
563 if (delta < nearest_delta)
|
|
|
564 {
|
|
|
565 nearest = x;
|
|
|
566 nearest_delta = delta;
|
|
|
567 }
|
|
|
568 }
|
|
|
569 color_def->red = cells[nearest].red;
|
|
|
570 color_def->green = cells[nearest].green;
|
|
|
571 color_def->blue = cells[nearest].blue;
|
|
|
572 free (cells);
|
|
|
573 return XAllocColor (display, screen_colormap, color_def);
|
|
|
574 }
|
|
|
575 }
|
|
|
576
|
|
|
577 static void
|
|
|
578 make_shadow_pixels (XlwScrollBarWidget w)
|
|
|
579 {
|
|
|
580 Display *dpy = XtDisplay((Widget) w);
|
|
|
581 Colormap cmap = w->core.colormap;
|
|
|
582 XColor topc, botc;
|
|
|
583 int top_frobbed, bottom_frobbed;
|
|
|
584 Pixel bg, fg;
|
|
|
585
|
|
|
586 top_frobbed = bottom_frobbed = 0;
|
|
|
587
|
|
|
588 bg = w->core.background_pixel;
|
|
|
589 fg = w->sb.foreground;
|
|
|
590
|
|
|
591 if (w->sb.topShadowColor == (Pixel)~0) w->sb.topShadowColor = bg;
|
|
|
592 if (w->sb.bottomShadowColor == (Pixel)~0) w->sb.bottomShadowColor = fg;
|
|
|
593
|
|
|
594 if (w->sb.topShadowColor == bg || w->sb.topShadowColor == fg)
|
|
|
595 {
|
|
|
596 topc.pixel = bg;
|
|
|
597 XQueryColor (dpy, cmap, &topc);
|
|
|
598 /* don't overflow/wrap! */
|
|
|
599 topc.red = MINL(65535, topc.red * 1.2);
|
|
|
600 topc.green = MINL(65535, topc.green * 1.2);
|
|
|
601 topc.blue = MINL(65535, topc.blue * 1.2);
|
|
|
602 if (allocate_nearest_color (dpy, cmap, &topc))
|
|
|
603 {
|
|
|
604 if (topc.pixel == bg)
|
|
|
605 {
|
|
|
606 XFreeColors (dpy, cmap, &topc.pixel, 1, 0);
|
|
|
607 topc.red = MINL(65535, topc.red + 0x8000);
|
|
|
608 topc.green = MINL(65535, topc.green + 0x8000);
|
|
|
609 topc.blue = MINL(65535, topc.blue + 0x8000);
|
|
|
610 if (allocate_nearest_color (dpy, cmap, &topc))
|
|
|
611 {
|
|
|
612 w->sb.topShadowColor = topc.pixel;
|
|
|
613 }
|
|
|
614 }
|
|
|
615 else
|
|
|
616 {
|
|
|
617 w->sb.topShadowColor = topc.pixel;
|
|
|
618 }
|
|
|
619
|
|
|
620 top_frobbed = 1;
|
|
|
621 }
|
|
|
622 }
|
|
|
623
|
|
|
624 if (w->sb.bottomShadowColor == fg || w->sb.bottomShadowColor == bg)
|
|
|
625 {
|
|
|
626 botc.pixel = bg;
|
|
|
627 XQueryColor (dpy, cmap, &botc);
|
|
|
628 botc.red = (botc.red * 3) / 5;
|
|
|
629 botc.green = (botc.green * 3) / 5;
|
|
|
630 botc.blue = (botc.blue * 3) / 5;
|
|
|
631 if (allocate_nearest_color (dpy, cmap, &botc))
|
|
|
632 {
|
|
|
633 if (botc.pixel == bg)
|
|
|
634 {
|
|
|
635 XFreeColors (dpy, cmap, &botc.pixel, 1, 0);
|
|
|
636 botc.red = MINL(65535, botc.red + 0x4000);
|
|
|
637 botc.green = MINL(65535, botc.green + 0x4000);
|
|
|
638 botc.blue = MINL(65535, botc.blue + 0x4000);
|
|
|
639 if (allocate_nearest_color (dpy, cmap, &botc))
|
|
|
640 {
|
|
|
641 w->sb.bottomShadowColor = botc.pixel;
|
|
|
642 }
|
|
|
643 }
|
|
|
644 else
|
|
|
645 {
|
|
|
646 w->sb.bottomShadowColor = botc.pixel;
|
|
|
647 }
|
|
|
648 bottom_frobbed = 1;
|
|
|
649 }
|
|
|
650 }
|
|
|
651
|
|
|
652 if (top_frobbed && bottom_frobbed)
|
|
|
653 {
|
|
|
654 int top_avg = ((topc.red / 3) + (topc.green / 3) + (topc.blue / 3));
|
|
|
655 int bot_avg = ((botc.red / 3) + (botc.green / 3) + (botc.blue / 3));
|
|
|
656 if (bot_avg > top_avg)
|
|
|
657 {
|
|
|
658 Pixel tmp = w->sb.topShadowColor;
|
|
|
659 w->sb.topShadowColor = w->sb.bottomShadowColor;
|
|
|
660 w->sb.bottomShadowColor = tmp;
|
|
|
661 }
|
|
|
662 else if (topc.pixel == botc.pixel)
|
|
|
663 {
|
|
|
664 if (botc.pixel == bg)
|
|
|
665 w->sb.topShadowColor = bg;
|
|
|
666 else
|
|
|
667 w->sb.bottomShadowColor = fg;
|
|
|
668 }
|
|
|
669 }
|
|
|
670
|
|
|
671 if (w->sb.topShadowColor == w->core.background_pixel ||
|
|
|
672 w->sb.bottomShadowColor == w->core.background_pixel)
|
|
|
673 {
|
|
|
674 /* Assume we're in mono. This code should be okay even if we're
|
|
|
675 * really in color but just short on color cells -- We want the
|
|
|
676 * following behavior, which has been empirically determined to
|
|
|
677 * work well for all fg/bg combinations in mono: If the trough
|
|
|
678 * and slider are BOTH black, then use a white top shadow and a
|
|
|
679 * grey bottom shadow, otherwise use a grey top shadow and a
|
|
|
680 * black bottom shadow.
|
|
|
681 */
|
|
|
682
|
|
|
683 Pixel white = WhitePixelOfScreen (DefaultScreenOfDisplay (XtDisplay (w)));
|
|
|
684 Pixel black = BlackPixelOfScreen (DefaultScreenOfDisplay (XtDisplay (w)));
|
|
|
685
|
|
|
686 /* Note: core.background_pixel is the color of the slider ... */
|
|
|
687
|
|
|
688 if (w->core.background_pixel == black &&
|
|
|
689 w->sb.troughColor == black)
|
|
|
690 {
|
|
|
691 w->sb.topShadowColor = white;
|
|
|
692 w->sb.bottomShadowPixmap = w->sb.grayPixmap;
|
|
|
693 } else {
|
|
|
694 w->sb.topShadowPixmap = w->sb.grayPixmap;
|
|
|
695 w->sb.bottomShadowColor = black;
|
|
|
696 }
|
|
|
697 }
|
|
|
698 }
|
|
|
699
|
|
|
700 static void
|
|
|
701 make_trough_pixel (XlwScrollBarWidget w)
|
|
|
702 {
|
|
|
703 Display *dpy = XtDisplay((Widget) w);
|
|
|
704 Colormap cmap = w->core.colormap;
|
|
|
705 XColor troughC;
|
|
|
706
|
|
|
707 if (w->sb.troughColor == (Pixel)~0) w->sb.troughColor = w->core.background_pixel;
|
|
|
708
|
|
|
709 if (w->sb.troughColor == w->core.background_pixel)
|
|
|
710 {
|
|
|
711 troughC.pixel = w->core.background_pixel;
|
|
|
712 XQueryColor (dpy, cmap, &troughC);
|
|
|
713 troughC.red = (troughC.red * 4) / 5;
|
|
|
714 troughC.green = (troughC.green * 4) / 5;
|
|
|
715 troughC.blue = (troughC.blue * 4) / 5;
|
|
|
716 if (allocate_nearest_color (dpy, cmap, &troughC))
|
|
|
717 w->sb.troughColor = troughC.pixel;
|
|
|
718 }
|
|
|
719 }
|
|
|
720
|
|
|
721 /*-------------------------- Draw 3D Border -----------------------------*/
|
|
|
722 static void
|
|
|
723 draw_shadows (Display *dpy, Drawable d, GC shine_gc, GC shadow_gc,
|
|
|
724 int x, int y, int width, int height, int shadowT)
|
|
|
725 {
|
|
|
726 XSegment shine[10], shadow[10];
|
|
|
727 int i;
|
|
|
728
|
|
|
729 if (shadowT > (width / 2)) shadowT = (width / 2);
|
|
|
730 if (shadowT > (height / 2)) shadowT = (height / 2);
|
|
|
731 if (shadowT <= 0) return;
|
|
|
732
|
|
|
733 for (i = 0; i < shadowT; i++)
|
|
|
734 {
|
|
|
735 /* Top segments */
|
|
|
736 shine[i].x1 = x;
|
|
|
737 shine[i].y2 = shine[i].y1 = y + i;
|
|
|
738 shine[i].x2 = x + width - i - 1;
|
|
|
739 /* Left segments */
|
|
|
740 shine[i + shadowT].x2 = shine[i + shadowT].x1 = x + i;
|
|
|
741 shine[i + shadowT].y1 = y + shadowT;
|
|
|
742 shine[i + shadowT].y2 = y + height - i - 1;
|
|
|
743
|
|
|
744 /* Bottom segments */
|
|
|
745 shadow[i].x1 = x + i;
|
|
|
746 shadow[i].y2 = shadow[i].y1 = y + height - i - 1;
|
|
|
747 shadow[i].x2 = x + width - 1 ;
|
|
|
748 /* Right segments */
|
|
|
749 shadow[i + shadowT].x2 = shadow[i + shadowT].x1 = x + width - i - 1;
|
|
|
750 shadow[i + shadowT].y1 = y + i + 1;
|
|
|
751 shadow[i + shadowT].y2 = y + height - 1 ;
|
|
|
752 }
|
|
|
753
|
|
|
754 XDrawSegments (dpy, d, shine_gc, shine, shadowT * 2);
|
|
|
755 XDrawSegments (dpy, d, shadow_gc, shadow, shadowT * 2);
|
|
|
756 }
|
|
|
757
|
|
|
758 /*------------------ Draw 3D Arrows: left, up, down, right --------------*/
|
|
|
759 static int
|
|
|
760 make_vert_seg (XSegment *seg, int x1, int y1, int x2, int y2, int shadowT)
|
|
|
761 {
|
|
|
762 int i;
|
|
|
763
|
|
|
764 for (i=0; i<shadowT; i++, seg++)
|
|
|
765 {
|
|
|
766 seg->x1 = x1;
|
|
|
767 seg->y1 = y1++;
|
|
|
768 seg->x2 = x2;
|
|
|
769 seg->y2 = y2++;
|
|
|
770 }
|
|
|
771 return shadowT;
|
|
|
772 }
|
|
|
773
|
|
|
774 static int
|
|
|
775 make_hor_seg (XSegment *seg, int x1, int y1, int x2, int y2, int shadowT)
|
|
|
776 {
|
|
|
777 int i;
|
|
|
778
|
|
|
779 for (i=0; i<shadowT; i++, seg++)
|
|
|
780 {
|
|
|
781 seg->x1 = x1++;
|
|
|
782 seg->y1 = y1;
|
|
|
783 seg->x2 = x2++;
|
|
|
784 seg->y2 = y2;
|
|
|
785 }
|
|
|
786 return shadowT;
|
|
|
787 }
|
|
|
788
|
|
|
789 static void
|
|
|
790 draw_arrow_up (Display *dpy, Drawable win, GC bgGC, GC shineGC, GC shadowGC,
|
|
|
791 int x, int y, int width, int height, int shadowT)
|
|
|
792 {
|
|
|
793 XSegment shine[10], shadow[10];
|
|
|
794 XPoint triangle[3];
|
|
|
795 int mid;
|
|
|
796
|
|
|
797 mid = width / 2;
|
|
|
798
|
|
|
799 if (shadowT > (width / 2)) shadowT = (width / 2);
|
|
|
800 if (shadowT > (height / 2)) shadowT = (height / 2);
|
|
|
801 if (shadowT < 0) shadowT = 0;
|
|
|
802
|
|
|
803 /* / */
|
|
|
804 make_vert_seg (shine,
|
|
|
805 x, y + height - shadowT - 1,
|
|
|
806 x + mid, y, shadowT);
|
|
|
807 /* _\ */
|
|
|
808 make_vert_seg (shadow,
|
|
|
809 x, y + height - shadowT - 1,
|
|
|
810 x + width - 1, y + height - shadowT - 1, shadowT);
|
|
|
811 make_vert_seg (shadow + shadowT,
|
|
|
812 x + mid, y,
|
|
|
813 x + width - 1, y + height - shadowT - 1, shadowT);
|
|
|
814
|
|
|
815 triangle[0].x = x;
|
|
|
816 triangle[0].y = y + height - 1;
|
|
|
817 triangle[1].x = x + mid;
|
|
|
818 triangle[1].y = y;
|
|
|
819 triangle[2].x = x + width - 1;
|
|
|
820 triangle[2].y = y + height - 1;
|
|
|
821
|
|
|
822 XFillPolygon (dpy, win, bgGC, triangle, 3, Convex, ArcChord);
|
|
|
823
|
|
|
824 XDrawSegments (dpy, win, shadowGC, shadow, shadowT * 2);
|
|
|
825 XDrawSegments (dpy, win, shineGC, shine, shadowT);
|
|
|
826 }
|
|
|
827
|
|
|
828 static void
|
|
|
829 draw_arrow_left (Display *dpy, Drawable win, GC bgGC, GC shineGC, GC shadowGC,
|
|
|
830 int x, int y, int width, int height, int shadowT)
|
|
|
831 {
|
|
|
832 XSegment shine[10], shadow[10];
|
|
|
833 XPoint triangle[3];
|
|
|
834
|
|
|
835 int mid = width / 2;
|
|
|
836
|
|
|
837 if (shadowT > (width / 2)) shadowT = (width / 2);
|
|
|
838 if (shadowT > (height / 2)) shadowT = (height / 2);
|
|
|
839 if (shadowT < 0) shadowT = 0;
|
|
|
840
|
|
|
841 /* / */
|
|
|
842 make_hor_seg (shine,
|
|
|
843 x, y + mid,
|
|
|
844 x + width - shadowT - 1, y, shadowT);
|
|
|
845 /* \| */
|
|
|
846 make_hor_seg (shadow,
|
|
|
847 x, y + mid,
|
|
|
848 x + width - shadowT - 1, y + height - 1, shadowT);
|
|
|
849 make_hor_seg (shadow + shadowT,
|
|
|
850 x + width - shadowT - 1, y,
|
|
|
851 x + width - shadowT - 1, y + height - 1, shadowT);
|
|
|
852
|
|
|
853 triangle[0].x = x + width - 1;
|
|
|
854 triangle[0].y = y + height - 1;
|
|
|
855 triangle[1].x = x;
|
|
|
856 triangle[1].y = y + mid;
|
|
|
857 triangle[2].x = x + width - 1;
|
|
|
858 triangle[2].y = y;
|
|
|
859
|
|
|
860 XFillPolygon (dpy, win, bgGC, triangle, 3, Convex, ArcChord);
|
|
|
861
|
|
|
862 XDrawSegments (dpy, win, shadowGC, shadow, shadowT * 2);
|
|
|
863 XDrawSegments (dpy, win, shineGC, shine, shadowT);
|
|
|
864 }
|
|
|
865
|
|
|
866 static void
|
|
|
867 draw_arrow_down (Display *dpy, Drawable win, GC bgGC, GC shineGC, GC shadowGC,
|
|
|
868 int x, int y, int width, int height, int shadowT)
|
|
|
869 {
|
|
|
870 XSegment shine[10], shadow[10];
|
|
|
871 XPoint triangle[3];
|
|
|
872 int mid;
|
|
|
873
|
|
|
874 mid = width / 2;
|
|
|
875
|
|
|
876 if (shadowT > (width / 2)) shadowT = (width / 2);
|
|
|
877 if (shadowT > (height / 2)) shadowT = (height / 2);
|
|
|
878 if (shadowT < 0) shadowT = 0;
|
|
|
879
|
|
|
880 /* \- */
|
|
|
881 make_vert_seg (shine,
|
|
|
882 x, y,
|
|
|
883 x + mid, y + height - shadowT - 1, shadowT);
|
|
|
884 make_vert_seg (shine + shadowT,
|
|
|
885 x, y,
|
|
|
886 x + width - 1, y, shadowT);
|
|
|
887 /* / */
|
|
|
888 make_vert_seg (shadow,
|
|
|
889 x + width - 1, y,
|
|
|
890 x + mid, y + height - shadowT - 1, shadowT);
|
|
|
891
|
|
|
892 triangle[0].x = x;
|
|
|
893 triangle[0].y = y;
|
|
|
894 triangle[1].x = x + mid;
|
|
|
895 triangle[1].y = y + height - 1;
|
|
|
896 triangle[2].x = x + width - 1;
|
|
|
897 triangle[2].y = y;
|
|
|
898
|
|
|
899 XFillPolygon (dpy, win, bgGC, triangle, 3, Convex, ArcChord);
|
|
|
900
|
|
|
901 XDrawSegments (dpy, win, shadowGC, shadow, shadowT);
|
|
|
902 XDrawSegments (dpy, win, shineGC, shine, shadowT * 2);
|
|
|
903 }
|
|
|
904
|
|
|
905 static void
|
|
|
906 draw_arrow_right (Display *dpy, Drawable win, GC bgGC, GC shineGC, GC shadowGC,
|
|
|
907 int x, int y, int width, int height, int shadowT)
|
|
|
908 {
|
|
|
909 XSegment shine[10], shadow[10];
|
|
|
910 XPoint triangle[3];
|
|
|
911 int mid;
|
|
|
912
|
|
|
913 mid = width / 2;
|
|
|
914
|
|
|
915 if (shadowT > (width / 2)) shadowT = (width / 2);
|
|
|
916 if (shadowT > (height / 2)) shadowT = (height / 2);
|
|
|
917 if (shadowT < 0) shadowT = 0;
|
|
|
918
|
|
|
919 /* |\ */
|
|
|
920 make_hor_seg (shine,
|
|
|
921 x, y,
|
|
|
922 x + width - shadowT - 1, y + mid, shadowT);
|
|
|
923 make_hor_seg (shine + shadowT,
|
|
|
924 x, y,
|
|
|
925 x, y + height - 1, shadowT);
|
|
|
926 /* / */
|
|
|
927 make_hor_seg (shadow,
|
|
|
928 x, y + height - 1,
|
|
|
929 x + width - shadowT - 1, y + mid, shadowT);
|
|
|
930
|
|
|
931 triangle[0].x = x + 1;
|
|
|
932 triangle[0].y = y + height - 1;
|
|
|
933 triangle[1].x = x + width - 1;
|
|
|
934 triangle[1].y = y + mid;
|
|
|
935 triangle[2].x = x + 1;
|
|
|
936 triangle[2].y = y;
|
|
|
937
|
|
|
938 XFillPolygon (dpy, win, bgGC, triangle, 3, Convex, ArcChord);
|
|
|
939
|
|
|
940 XDrawSegments (dpy, win, shadowGC, shadow, shadowT);
|
|
|
941 XDrawSegments (dpy, win, shineGC, shine, shadowT * 2);
|
|
|
942 }
|
|
|
943
|
|
|
944 static void
|
|
|
945 draw_dimple (Display *dpy, Drawable win, GC shine, GC shadow,
|
|
|
946 int x, int y, int width, int height)
|
|
|
947 {
|
|
|
948 XDrawArc (dpy, win, shine, x, y, width, height, 46*64, 180*64);
|
|
|
949 XDrawArc (dpy, win, shadow, x, y, width, height, 45*64, -179*64);
|
|
|
950 }
|
|
|
951
|
|
|
952 /*------- Scrollbar values -> pixels, pixels -> scrollbar values --------*/
|
|
|
953
|
|
|
954 static void
|
|
|
955 seg_pixel_sizes (XlwScrollBarWidget w, int *above_return,
|
|
|
956 int *ss_return, int *below_return)
|
|
|
957 {
|
|
|
958 float total, height, fuz;
|
|
|
959 int value, above, ss, below;
|
|
|
960
|
|
|
961 height = widget_h (w);
|
|
|
962 if (w->sb.showArrows) height -= (2 * arrow_h (w));
|
|
|
963
|
|
|
964 value = w->sb.value - w->sb.minimum;
|
|
|
965
|
|
|
966 total = w->sb.maximum - w->sb.minimum;
|
|
|
967 fuz = total / 2;
|
|
|
968
|
|
|
969 ss = (int) ((height * w->sb.sliderSize + fuz) / total);
|
|
|
970 above = (int) ((height * value + fuz) / total);
|
|
|
971 below = (int) ((height) - (ss + above));
|
|
|
972
|
|
|
973 /* Don't let slider get smaller than SS_MIN */
|
|
|
974 if (ss < SS_MIN)
|
|
|
975 {
|
|
|
976 /* add a percent amount for integer rounding */
|
|
434
|
977 float tmp = (((float) (SS_MIN - ss) * (float) value) / total) + 0.5;
|
|
428
|
978
|
|
|
979 above -= (int) tmp;
|
|
|
980 ss = SS_MIN;
|
|
|
981 below = (int) ((height) - (ss + above));
|
|
|
982
|
|
|
983 if (above < 0)
|
|
|
984 {
|
|
|
985 above = 0;
|
|
|
986 below = (int) (height - ss);
|
|
|
987 }
|
|
|
988 if (below < 0)
|
|
|
989 {
|
|
|
990 above = (int) (height - ss);
|
|
|
991 below = 0;
|
|
|
992 }
|
|
|
993 if (ss > height)
|
|
|
994 {
|
|
|
995 above = 0;
|
|
|
996 ss = (int) height;
|
|
|
997 below = 0;
|
|
|
998 }
|
|
|
999 }
|
|
|
1000
|
|
|
1001 *above_return = above;
|
|
|
1002 *ss_return = ss;
|
|
|
1003 *below_return = below;
|
|
|
1004
|
|
|
1005 CHECK (w);
|
|
|
1006 }
|
|
|
1007
|
|
|
1008 static void
|
|
|
1009 verify_values (XlwScrollBarWidget w)
|
|
|
1010 {
|
|
|
1011 int total = w->sb.maximum - w->sb.minimum;
|
|
|
1012
|
|
|
1013 if (w->sb.sliderSize > total)
|
|
|
1014 w->sb.sliderSize = total;
|
|
|
1015
|
|
|
1016 if (w->sb.pageIncrement > total)
|
|
|
1017 w->sb.pageIncrement = total;
|
|
|
1018
|
|
|
1019 if (w->sb.increment > total)
|
|
|
1020 w->sb.increment = total;
|
|
|
1021
|
|
|
1022 if (w->sb.value < w->sb.minimum)
|
|
|
1023 w->sb.value = w->sb.minimum;
|
|
|
1024
|
|
|
1025 if (w->sb.value > w->sb.maximum)
|
|
|
1026 w->sb.value = w->sb.maximum;
|
|
|
1027
|
|
|
1028 if (w->sb.sliderSize > w->sb.maximum - w->sb.value)
|
|
|
1029 w->sb.sliderSize = w->sb.maximum - w->sb.value;
|
|
|
1030 }
|
|
|
1031
|
|
|
1032 static int
|
|
|
1033 value_from_pixel (XlwScrollBarWidget w, int above)
|
|
|
1034 {
|
|
|
1035 float total, height, fuz;
|
|
|
1036 int value, ss;
|
|
|
1037
|
|
|
1038 height = widget_h (w);
|
|
|
1039 if (w->sb.showArrows)
|
|
|
1040 height -= (2 * arrow_h (w));
|
|
|
1041
|
|
|
1042 total = w->sb.maximum - w->sb.minimum;
|
|
|
1043 fuz = height / 2;
|
|
|
1044
|
|
|
1045 ss = (int) ((height * w->sb.sliderSize + (total / 2)) / total);
|
|
|
1046
|
|
|
1047 if (ss < SS_MIN)
|
|
|
1048 {
|
|
|
1049 /* add a percent amount for integer rounding */
|
|
|
1050 above += (int) ((((SS_MIN - ss) * above) + fuz) / height);
|
|
|
1051 }
|
|
|
1052
|
|
|
1053 {
|
|
|
1054 /* Prevent SIGFPE's that would occur if we don't truncate the value. */
|
|
|
1055 float floatval = w->sb.minimum + ((float)(above * total + fuz) / height);
|
|
|
1056 if (floatval >= (float) INT_MAX)
|
|
|
1057 value = INT_MAX;
|
|
|
1058 else if (floatval <= (float) INT_MIN)
|
|
|
1059 value = INT_MIN;
|
|
|
1060 else
|
|
|
1061 value = (int) floatval;
|
|
|
1062 }
|
|
|
1063
|
|
|
1064 return value;
|
|
|
1065 }
|
|
|
1066
|
|
|
1067
|
|
|
1068 static void
|
|
|
1069 redraw_dimple (XlwScrollBarWidget w, Display *dpy, Window win,
|
|
|
1070 int x, int y, int width, int height)
|
|
|
1071 {
|
|
|
1072 if (SLIDER_DIMPLE == slider_style (w))
|
|
|
1073 {
|
|
|
1074 int size;
|
|
|
1075 int slider_p = (w->sb.armed == ARM_SLIDER);
|
|
|
1076 GC shine = slider_p ? w->sb.bottomShadowGC : w->sb.topShadowGC;
|
|
|
1077 GC shadow = slider_p ? w->sb.topShadowGC : w->sb.bottomShadowGC;
|
|
|
1078 int shadowT = w->sb.shadowThickness;
|
|
|
1079
|
|
|
1080 x += shadowT;
|
|
|
1081 y += shadowT;
|
|
|
1082 width -= 2*shadowT;
|
|
|
1083 height -= 2*shadowT;
|
|
|
1084
|
|
|
1085 size = (width < height ? width : height) * 3 / 4;
|
|
|
1086
|
|
|
1087 if (size%2 != (width < height ? width : height)%2) size--;
|
|
|
1088
|
|
|
1089 DBUG (fprintf (stderr, "%d %d\n",
|
|
|
1090 x + (width / 2) - (size / 2) - 2*shadowT,
|
|
|
1091 width - size - shadowT));
|
|
|
1092
|
|
|
1093 draw_dimple (dpy, win, shine, shadow,
|
|
|
1094 x + (width / 2) - (size / 2),
|
|
|
1095 y + (height / 2) - (size / 2),
|
|
|
1096 size, size);
|
|
|
1097 }
|
|
|
1098 }
|
|
|
1099
|
|
|
1100 static void
|
|
|
1101 draw_slider (XlwScrollBarWidget w, int above, int ss, int below)
|
|
|
1102 {
|
|
|
1103 Display *dpy = XtDisplay ((Widget) w);
|
|
|
1104 Window win = XtWindow ((Widget) w);
|
|
|
1105
|
|
|
1106 int x = widget_x (w);
|
|
|
1107 int y = widget_y (w);
|
|
|
1108 int width = widget_w (w);
|
|
|
1109 int height = widget_h (w);
|
|
|
1110 int shadowT = w->sb.shadowThickness;
|
|
|
1111 int vert_p = VERT (w);
|
|
|
1112
|
|
|
1113 if (shadowT > (width / 2)) shadowT = (width / 2);
|
|
|
1114 if (shadowT > (height / 2)) shadowT = (height / 2);
|
|
|
1115 if (shadowT < 0) shadowT = 0;
|
|
|
1116
|
|
|
1117 if (w->sb.showArrows && !arrow_same_end (w))
|
|
|
1118 y += arrow_h (w);
|
|
|
1119
|
|
|
1120 /* trough above slider */
|
|
|
1121 if (above > 0)
|
|
|
1122 {
|
|
|
1123 if (vert_p)
|
|
|
1124 XClearArea (dpy, win, x, y, width, above, False);
|
|
|
1125 else
|
|
|
1126 XClearArea (dpy, win, y, x, above, width, False);
|
|
|
1127 }
|
|
|
1128
|
|
|
1129 /* slider */
|
|
|
1130 if (vert_p)
|
|
|
1131 {
|
|
|
1132 draw_shadows (dpy, win, w->sb.topShadowGC, w->sb.bottomShadowGC,
|
|
|
1133 x, y + above, width, ss, shadowT);
|
|
|
1134 XFillRectangle (dpy, win, w->sb.backgroundGC,
|
|
|
1135 x+shadowT, y + above + shadowT,
|
|
|
1136 width-2*shadowT, ss-2*shadowT);
|
|
|
1137 redraw_dimple (w, dpy, win, x, y + above, width, ss);
|
|
|
1138 }
|
|
|
1139 else
|
|
|
1140 {
|
|
|
1141 draw_shadows (dpy, win, w->sb.topShadowGC, w->sb.bottomShadowGC,
|
|
|
1142 y + above, x, ss, width, shadowT);
|
|
|
1143 XFillRectangle (dpy, win, w->sb.backgroundGC,
|
|
|
1144 y + above + shadowT, x+shadowT,
|
|
|
1145 ss-2*shadowT, width-2*shadowT);
|
|
|
1146 redraw_dimple (w, dpy, win, y + above, x, ss, width);
|
|
|
1147 }
|
|
|
1148
|
|
|
1149 /* trough below slider */
|
|
|
1150 if (below > 0)
|
|
|
1151 {
|
|
|
1152 if (vert_p)
|
|
|
1153 XClearArea (dpy, win, x, y + above + ss, width, below, False);
|
|
|
1154 else
|
|
|
1155 XClearArea (dpy, win, y + above + ss, x, below, width, False);
|
|
|
1156 }
|
|
|
1157
|
|
|
1158 CHECK (w);
|
|
|
1159 }
|
|
|
1160
|
|
|
1161 static void
|
|
|
1162 redraw_up_arrow (XlwScrollBarWidget w, Boolean armed, Boolean clear_behind)
|
|
|
1163 {
|
|
|
1164 Display *dpy = XtDisplay ((Widget) w);
|
|
|
1165 Window win = XtWindow ((Widget) w);
|
|
|
1166
|
|
|
1167 int x = widget_x (w);
|
|
|
1168 int y = widget_y (w);
|
|
|
1169 int width = widget_w (w);
|
|
|
1170 int height = widget_h (w);
|
|
|
1171 int shadowT = w->sb.shadowThickness;
|
|
|
1172 int arrow_height = arrow_h (w);
|
|
|
1173
|
|
|
1174 GC bg = w->sb.backgroundGC;
|
|
|
1175 GC shine = armed ? w->sb.bottomShadowGC : w->sb.topShadowGC;
|
|
|
1176 GC shadow = armed ? w->sb.topShadowGC : w->sb.bottomShadowGC;
|
|
|
1177
|
|
|
1178 if (VERT (w))
|
|
|
1179 {
|
|
|
1180 if (arrow_same_end (w))
|
|
|
1181 y += height - 2 * arrow_height;
|
|
|
1182 if (clear_behind)
|
|
|
1183 XClearArea (dpy, win, x, y, width, arrow_height + 1, False);
|
|
|
1184 draw_arrow_up (dpy, win, bg, shine, shadow,
|
|
|
1185 x + (width - arrow_height)/2, y,
|
|
|
1186 arrow_height, arrow_height, shadowT);
|
|
|
1187 }
|
|
|
1188 else
|
|
|
1189 {
|
|
|
1190 if (arrow_same_end (w))
|
|
|
1191 y += height - 2 * arrow_height;
|
|
|
1192 if (clear_behind)
|
|
|
1193 XClearArea (dpy, win, y, x, arrow_height + 1, height, False);
|
|
|
1194 draw_arrow_left (dpy, win, bg, shine, shadow,
|
|
|
1195 y, x + (width - arrow_height)/2,
|
|
|
1196 arrow_height, arrow_height, shadowT);
|
|
|
1197 }
|
|
|
1198 }
|
|
|
1199
|
|
|
1200 static void
|
|
|
1201 redraw_down_arrow (XlwScrollBarWidget w, Boolean armed, Boolean clear_behind)
|
|
|
1202 {
|
|
|
1203 Display *dpy = XtDisplay ((Widget) w);
|
|
|
1204 Window win = XtWindow ((Widget) w);
|
|
|
1205
|
|
|
1206 int x = widget_x (w);
|
|
|
1207 int y = widget_y (w);
|
|
|
1208 int width = widget_w (w);
|
|
|
1209 int height = widget_h (w);
|
|
|
1210 int shadowT = w->sb.shadowThickness;
|
|
|
1211 int arrow_height = arrow_h (w);
|
|
|
1212
|
|
|
1213 GC bg = w->sb.backgroundGC;
|
|
|
1214 GC shine = armed ? w->sb.bottomShadowGC : w->sb.topShadowGC;
|
|
|
1215 GC shadow = armed ? w->sb.topShadowGC : w->sb.bottomShadowGC;
|
|
|
1216
|
|
|
1217 if (VERT (w))
|
|
|
1218 {
|
|
|
1219 if (clear_behind)
|
|
|
1220 XClearArea (dpy, win, x, y + height - arrow_height, width,
|
|
|
1221 arrow_height + 1, False);
|
|
|
1222 draw_arrow_down (dpy, win, bg, shine, shadow,
|
|
|
1223 x + (width - arrow_height)/2,
|
|
|
1224 y + height - arrow_height + 1,
|
|
|
1225 arrow_height, arrow_height, shadowT);
|
|
|
1226 }
|
|
|
1227 else
|
|
|
1228 {
|
|
|
1229 if (clear_behind)
|
|
|
1230 XClearArea (dpy, win, y + height - arrow_height, x,
|
|
|
1231 arrow_height + 1, height, False);
|
|
|
1232 draw_arrow_right (dpy, win, bg, shine, shadow,
|
|
|
1233 y + height - arrow_height + 1,
|
|
|
1234 x + (width - arrow_height)/2,
|
|
|
1235 arrow_height, arrow_height, shadowT);
|
|
|
1236 }
|
|
|
1237 }
|
|
|
1238
|
|
|
1239 static void
|
|
|
1240 redraw_everything (XlwScrollBarWidget w, Region region, Boolean behind_arrows)
|
|
|
1241 {
|
|
|
1242 Display *dpy = XtDisplay ((Widget) w);
|
|
|
1243 Window win = XtWindow ((Widget) w);
|
|
|
1244
|
|
|
1245 if (w->sb.showArrows)
|
|
|
1246 {
|
|
|
1247 if (region == NULL)
|
|
|
1248 {
|
|
|
1249 redraw_up_arrow (w, False, behind_arrows);
|
|
|
1250 redraw_down_arrow (w, False, behind_arrows);
|
|
|
1251 }
|
|
|
1252 else
|
|
|
1253 {
|
|
|
1254 int x = widget_x (w);
|
|
|
1255 int y = widget_y (w);
|
|
|
1256 int width = widget_w (w);
|
|
|
1257 int height = widget_h (w);
|
|
|
1258 int arrow_height = arrow_h (w);
|
|
|
1259 int ax = x, ay = y;
|
|
|
1260
|
|
|
1261 if (arrow_same_end (w))
|
|
|
1262 {
|
|
|
1263 if (VERT (w))
|
|
|
1264 ay = y + height - arrow_height - arrow_height;
|
|
|
1265 else
|
|
|
1266 ax = x + height - arrow_height - arrow_height;
|
|
|
1267 }
|
|
|
1268 if (XRectInRegion (region, ax, ay, width, width))
|
|
|
1269 redraw_up_arrow (w, False, behind_arrows);
|
|
|
1270
|
|
|
1271 if (VERT (w))
|
|
|
1272 ay = y + height - arrow_height;
|
|
|
1273 else
|
|
|
1274 ax = x + height - arrow_height;
|
|
|
1275 if (XRectInRegion (region, ax, ay, width, width))
|
|
|
1276 redraw_down_arrow (w, False, behind_arrows);
|
|
|
1277 }
|
|
|
1278 }
|
|
|
1279
|
|
|
1280 draw_shadows (dpy, win, w->sb.bottomShadowGC, w->sb.topShadowGC, 0, 0,
|
|
|
1281 w->core.width, w->core.height, w->sb.shadowThickness);
|
|
|
1282
|
|
|
1283 draw_slider (w, w->sb.above, w->sb.ss, w->sb.below);
|
|
|
1284 }
|
|
|
1285
|
|
|
1286 /*-------------------------- Method Functions ---------------------------*/
|
|
|
1287
|
|
|
1288 static void
|
|
|
1289 Initialize (Widget treq, Widget tnew, ArgList args, Cardinal *num_args)
|
|
|
1290 {
|
|
|
1291 XlwScrollBarWidget request = (XlwScrollBarWidget) treq;
|
|
|
1292 XlwScrollBarWidget w = (XlwScrollBarWidget) tnew;
|
|
|
1293 Display *dpy = XtDisplay ((Widget) w);
|
|
|
1294 Window win = RootWindowOfScreen (DefaultScreenOfDisplay (dpy));
|
|
|
1295
|
|
|
1296 if (request->core.width == 0) w->core.width += (VERT (w) ? 12 : 25);
|
|
|
1297 if (request->core.height == 0) w->core.height += (VERT (w) ? 25 : 12);
|
|
|
1298
|
|
|
1299 verify_values (w);
|
|
|
1300
|
|
|
1301 w->sb.lastY = 0;
|
|
|
1302 w->sb.above = 0;
|
|
|
1303 w->sb.ss = 0;
|
|
|
1304 w->sb.below = 0;
|
|
|
1305 w->sb.armed = ARM_NONE;
|
|
|
1306 w->sb.forced_scroll = FORCED_SCROLL_NONE;
|
|
|
1307
|
|
|
1308 if (w->sb.shadowThickness > 5) w->sb.shadowThickness = 5;
|
|
|
1309
|
|
|
1310 w->sb.grayPixmap =
|
|
|
1311 XCreatePixmapFromBitmapData (dpy, win, (char *) gray_bits, gray_width,
|
|
|
1312 gray_height, 1, 0, 1);
|
|
|
1313
|
|
|
1314 make_trough_pixel (w);
|
|
|
1315
|
|
|
1316 make_shadow_pixels (w);
|
|
|
1317
|
|
|
1318 w->sb.backgroundGC =
|
|
|
1319 get_gc (w, w->core.background_pixel, w->core.background_pixel, None);
|
|
|
1320 w->sb.topShadowGC =
|
|
|
1321 get_gc (w, w->sb.topShadowColor, w->core.background_pixel,
|
|
|
1322 w->sb.topShadowPixmap);
|
|
|
1323 w->sb.bottomShadowGC =
|
|
|
1324 get_gc (w, w->sb.bottomShadowColor, w->core.background_pixel,
|
|
|
1325 w->sb.bottomShadowPixmap);
|
|
|
1326
|
|
|
1327 w->sb.fullRedrawNext = True;
|
|
|
1328
|
|
|
1329 w->sb.timerActive = False;
|
|
|
1330 }
|
|
|
1331
|
|
|
1332 static void
|
|
|
1333 Destroy (Widget widget)
|
|
|
1334 {
|
|
|
1335 XlwScrollBarWidget w = (XlwScrollBarWidget) widget;
|
|
|
1336 Display *dpy = XtDisplay ((Widget) w);
|
|
|
1337
|
|
|
1338 XtReleaseGC (widget, w->sb.bottomShadowGC);
|
|
|
1339 XtReleaseGC (widget, w->sb.topShadowGC);
|
|
|
1340 XtReleaseGC (widget, w->sb.backgroundGC);
|
|
|
1341
|
|
|
1342 XFreePixmap (dpy, w->sb.grayPixmap);
|
|
|
1343
|
|
|
1344 if (w->sb.timerActive)
|
|
|
1345 {
|
|
|
1346 XtRemoveTimeOut (w->sb.timerId);
|
|
|
1347 w->sb.timerActive = False; /* Should be a no-op, but you never know */
|
|
|
1348 }
|
|
|
1349 }
|
|
|
1350
|
|
|
1351 static void
|
|
|
1352 Realize (Widget widget, XtValueMask *valuemask, XSetWindowAttributes *attr)
|
|
|
1353 {
|
|
|
1354 XlwScrollBarWidget w = (XlwScrollBarWidget) widget;
|
|
|
1355 Display *dpy = XtDisplay ((Widget) w);
|
|
|
1356 Window win;
|
|
|
1357 XSetWindowAttributes win_attr;
|
|
|
1358
|
|
|
1359 (*coreClassRec.core_class.realize)(widget, valuemask, attr);
|
|
|
1360
|
|
|
1361 win = XtWindow ((Widget) w);
|
|
|
1362
|
|
|
1363 seg_pixel_sizes (w, &w->sb.above, &w->sb.ss, &w->sb.below);
|
|
|
1364
|
|
|
1365 XSetWindowBackground (dpy, win, w->sb.troughColor);
|
|
|
1366
|
|
|
1367 /* Change bit gravity so widget is not cleared on resize */
|
|
|
1368 win_attr.bit_gravity = NorthWestGravity;
|
|
|
1369 XChangeWindowAttributes (dpy, win, CWBitGravity , &win_attr);
|
|
|
1370
|
|
|
1371 }
|
|
|
1372
|
|
|
1373 static void
|
|
|
1374 Resize (Widget widget)
|
|
|
1375 {
|
|
|
1376 XlwScrollBarWidget w = (XlwScrollBarWidget) widget;
|
|
|
1377 Display *dpy = XtDisplay ((Widget) w);
|
|
|
1378 Window win = XtWindow ((Widget) w);
|
|
|
1379
|
|
|
1380 if (XtIsRealized (widget))
|
|
|
1381 {
|
|
|
1382 DBUG (fprintf (stderr, "Resize = %08lx\n", w));
|
|
|
1383
|
|
|
1384 seg_pixel_sizes (w, &w->sb.above, &w->sb.ss, &w->sb.below);
|
|
|
1385
|
|
|
1386 /* redraw_everything (w, NULL, True); */
|
|
|
1387
|
|
|
1388 w->sb.fullRedrawNext = True;
|
|
|
1389 /* Force expose event */
|
|
|
1390 XClearArea (dpy, win, widget_x (w), widget_y (w), 1, 1, True);
|
|
|
1391 }
|
|
|
1392
|
|
|
1393 if (w->sb.timerActive)
|
|
|
1394 {
|
|
|
1395 XtRemoveTimeOut (w->sb.timerId);
|
|
|
1396 w->sb.timerActive = False;
|
|
|
1397 }
|
|
|
1398 }
|
|
|
1399
|
|
|
1400 static void
|
|
|
1401 Redisplay (Widget widget, XEvent *event, Region region)
|
|
|
1402 {
|
|
|
1403 XlwScrollBarWidget w = (XlwScrollBarWidget) widget;
|
|
|
1404
|
|
|
1405 DBUG (fprintf (stderr, "Redisplay = %08lx\n", w));
|
|
|
1406
|
|
|
1407 if (XtIsRealized (widget))
|
|
|
1408 {
|
|
|
1409 if (w->sb.fullRedrawNext)
|
|
|
1410 redraw_everything (w, NULL, True);
|
|
|
1411 else
|
|
|
1412 redraw_everything (w, region, False);
|
|
|
1413 w->sb.fullRedrawNext = False;
|
|
|
1414 }
|
|
|
1415 }
|
|
|
1416
|
|
|
1417 static Boolean
|
|
|
1418 SetValues (Widget current, Widget request, Widget neww,
|
|
|
1419 ArgList args, Cardinal *num_args)
|
|
|
1420 {
|
|
|
1421 XlwScrollBarWidget cur = (XlwScrollBarWidget) current;
|
|
|
1422 XlwScrollBarWidget w = (XlwScrollBarWidget) neww;
|
|
|
1423 Boolean do_redisplay = False;
|
|
|
1424
|
|
|
1425 if (cur->sb.troughColor != w->sb.troughColor)
|
|
|
1426 {
|
|
|
1427 if (XtIsRealized ((Widget) w))
|
|
|
1428 {
|
|
|
1429 XSetWindowBackground (XtDisplay((Widget) w), XtWindow ((Widget) w),
|
|
|
1430 w->sb.troughColor);
|
|
|
1431 do_redisplay = True;
|
|
|
1432 }
|
|
|
1433 }
|
|
|
1434
|
|
|
1435 if (cur->core.background_pixel != w->core.background_pixel)
|
|
|
1436 {
|
|
|
1437 XtReleaseGC ((Widget)cur, cur->sb.backgroundGC);
|
|
|
1438 w->sb.backgroundGC =
|
|
|
1439 get_gc (w, w->core.background_pixel, w->core.background_pixel, None);
|
|
|
1440 do_redisplay = True;
|
|
|
1441 }
|
|
|
1442
|
|
|
1443 if (cur->sb.topShadowColor != w->sb.topShadowColor ||
|
|
|
1444 cur->sb.topShadowPixmap != w->sb.topShadowPixmap)
|
|
|
1445 {
|
|
|
1446 XtReleaseGC ((Widget)cur, cur->sb.topShadowGC);
|
|
|
1447 w->sb.topShadowGC =
|
|
|
1448 get_gc (w, w->sb.topShadowColor, w->core.background_pixel,
|
|
|
1449 w->sb.topShadowPixmap);
|
|
|
1450 do_redisplay = True;
|
|
|
1451 }
|
|
|
1452
|
|
|
1453 if (cur->sb.bottomShadowColor != w->sb.bottomShadowColor ||
|
|
|
1454 cur->sb.bottomShadowPixmap != w->sb.bottomShadowPixmap)
|
|
|
1455 {
|
|
|
1456 XtReleaseGC ((Widget)cur, cur->sb.bottomShadowGC);
|
|
|
1457 w->sb.bottomShadowGC =
|
|
|
1458 get_gc (w, w->sb.bottomShadowColor, w->core.background_pixel,
|
|
|
1459 w->sb.bottomShadowPixmap);
|
|
|
1460 do_redisplay = True;
|
|
|
1461 }
|
|
|
1462
|
|
|
1463 if (cur->sb.orientation != w->sb.orientation)
|
|
|
1464 do_redisplay = True;
|
|
|
1465
|
|
|
1466
|
|
|
1467 if (cur->sb.minimum != w->sb.minimum ||
|
|
|
1468 cur->sb.maximum != w->sb.maximum ||
|
|
|
1469 cur->sb.sliderSize != w->sb.sliderSize ||
|
|
|
1470 cur->sb.value != w->sb.value ||
|
|
|
1471 cur->sb.pageIncrement != w->sb.pageIncrement ||
|
|
|
1472 cur->sb.increment != w->sb.increment)
|
|
|
1473 {
|
|
|
1474 verify_values (w);
|
|
|
1475 if (XtIsRealized ((Widget) w))
|
|
|
1476 {
|
|
|
1477 seg_pixel_sizes (w, &w->sb.above, &w->sb.ss, &w->sb.below);
|
|
|
1478 draw_slider (w, w->sb.above, w->sb.ss, w->sb.below);
|
|
|
1479 }
|
|
|
1480 }
|
|
|
1481
|
|
|
1482 if (w->sb.shadowThickness > 5) w->sb.shadowThickness = 5;
|
|
|
1483
|
|
|
1484 return do_redisplay;
|
|
|
1485 }
|
|
|
1486
|
|
|
1487 void
|
|
|
1488 XlwScrollBarGetValues (Widget widget, int *value, int *sliderSize,
|
|
|
1489 int *increment, int *pageIncrement)
|
|
|
1490 {
|
|
|
1491 XlwScrollBarWidget w = (XlwScrollBarWidget) widget;
|
|
|
1492
|
|
|
1493 if (w && XtClass ((Widget) w) == xlwScrollBarWidgetClass)
|
|
|
1494 {
|
|
|
1495 if (value) *value = w->sb.value;
|
|
|
1496 if (sliderSize) *sliderSize = w->sb.sliderSize;
|
|
|
1497 if (increment) *increment = w->sb.increment;
|
|
|
1498 if (pageIncrement) *pageIncrement = w->sb.pageIncrement;
|
|
|
1499 }
|
|
|
1500 }
|
|
|
1501
|
|
|
1502 void
|
|
|
1503 XlwScrollBarSetValues (Widget widget, int value, int sliderSize,
|
|
|
1504 int increment, int pageIncrement, Boolean notify)
|
|
|
1505 {
|
|
|
1506 XlwScrollBarWidget w = (XlwScrollBarWidget) widget;
|
|
|
1507
|
|
|
1508 if (w && XtClass ((Widget) w) == xlwScrollBarWidgetClass &&
|
|
|
1509 (w->sb.value != value ||
|
|
|
1510 w->sb.sliderSize != sliderSize ||
|
|
|
1511 w->sb.increment != increment ||
|
|
|
1512 w->sb.pageIncrement != pageIncrement))
|
|
|
1513 {
|
|
|
1514 int last_value = w->sb.value;
|
|
|
1515
|
|
|
1516 w->sb.value = value;
|
|
|
1517 w->sb.sliderSize = sliderSize;
|
|
|
1518 w->sb.increment = increment;
|
|
|
1519 w->sb.pageIncrement = pageIncrement;
|
|
|
1520
|
|
|
1521 verify_values (w);
|
|
|
1522
|
|
|
1523 if (XtIsRealized (widget))
|
|
|
1524 {
|
|
|
1525 seg_pixel_sizes (w, &w->sb.above, &w->sb.ss, &w->sb.below);
|
|
|
1526 draw_slider (w, w->sb.above, w->sb.ss, w->sb.below);
|
|
|
1527
|
|
|
1528 if (w->sb.value != last_value && notify)
|
|
|
1529 call_callbacks (w, XmCR_VALUE_CHANGED, w->sb.value, 0, NULL);
|
|
|
1530 }
|
|
|
1531 }
|
|
|
1532 }
|
|
|
1533
|
|
|
1534 /*-------------------------- Action Functions ---------------------------*/
|
|
|
1535
|
|
|
1536 static void
|
|
|
1537 timer (XtPointer data, XtIntervalId *id)
|
|
|
1538 {
|
|
|
1539 XlwScrollBarWidget w = (XlwScrollBarWidget) data;
|
|
|
1540 w->sb.timerActive = False;
|
|
|
1541
|
|
|
1542 if (w->sb.armed != ARM_NONE)
|
|
|
1543 {
|
|
|
1544 int last_value = w->sb.value;
|
|
|
1545 int reason;
|
|
|
1546
|
|
|
1547 switch (w->sb.armed)
|
|
|
1548 {
|
|
|
1549 case ARM_PAGEUP:
|
|
|
1550 decrement_value (w, w->sb.pageIncrement);
|
|
|
1551 reason = XmCR_PAGE_DECREMENT;
|
|
|
1552 break;
|
|
|
1553 case ARM_PAGEDOWN:
|
|
|
1554 increment_value (w, w->sb.pageIncrement);
|
|
|
1555 reason = XmCR_PAGE_INCREMENT;
|
|
|
1556 break;
|
|
|
1557 case ARM_UP:
|
|
|
1558 decrement_value (w, w->sb.increment);
|
|
|
1559 reason = XmCR_DECREMENT;
|
|
|
1560 break;
|
|
|
1561 case ARM_DOWN:
|
|
|
1562 increment_value (w, w->sb.increment);
|
|
|
1563 reason = XmCR_INCREMENT;
|
|
|
1564 break;
|
|
|
1565 default:
|
|
|
1566 reason = XmCR_NONE;
|
|
|
1567 }
|
|
|
1568
|
|
|
1569 verify_values (w);
|
|
|
1570
|
|
|
1571 if (last_value != w->sb.value)
|
|
|
1572 {
|
|
|
1573 seg_pixel_sizes (w, &w->sb.above, &w->sb.ss, &w->sb.below);
|
|
|
1574 draw_slider (w, w->sb.above, w->sb.ss, w->sb.below);
|
|
|
1575
|
|
|
1576 call_callbacks (w, reason, w->sb.value, 0, NULL);
|
|
|
1577
|
|
|
1578 w->sb.timerId =
|
|
|
1579 XtAppAddTimeOut (XtWidgetToApplicationContext ((Widget) w),
|
|
|
1580 (unsigned long) w->sb.repeatDelay,
|
|
|
1581 timer, (XtPointer) w);
|
|
|
1582 w->sb.timerActive = True;
|
|
|
1583 }
|
|
|
1584 }
|
|
|
1585 }
|
|
|
1586
|
|
|
1587 static button_where
|
|
|
1588 what_button (XlwScrollBarWidget w, int mouse_x, int mouse_y)
|
|
|
1589 {
|
|
|
1590 int width = widget_w (w);
|
|
|
1591 int height = widget_h (w);
|
|
|
1592 int arrow_height = arrow_h (w);
|
|
|
1593
|
|
|
1594 mouse_x -= widget_x (w);
|
|
|
1595 mouse_y -= widget_y (w);
|
|
|
1596
|
|
|
1597 if (mouse_x < 0 || mouse_x >= width ||
|
|
|
1598 mouse_y < 0 || mouse_y >= height)
|
|
|
1599 return BUTTON_NONE;
|
|
|
1600
|
|
|
1601 if (w->sb.showArrows)
|
|
|
1602 {
|
|
|
1603 if (mouse_y >= (height -= arrow_height))
|
|
|
1604 return BUTTON_DOWN_ARROW;
|
|
|
1605
|
|
|
1606 if (arrow_same_end (w))
|
|
|
1607 {
|
|
|
1608 if (mouse_y >= (height -= arrow_height))
|
|
|
1609 return BUTTON_UP_ARROW;
|
|
|
1610 }
|
|
|
1611 else
|
|
|
1612 if ( (mouse_y -= arrow_height) < 0)
|
|
|
1613 return BUTTON_UP_ARROW;
|
|
|
1614 }
|
|
|
1615
|
|
|
1616 if ( (mouse_y -= w->sb.above) < 0)
|
|
|
1617 return BUTTON_TROUGH_ABOVE;
|
|
|
1618
|
|
|
1619 if ( (mouse_y -= w->sb.ss) < 0)
|
|
|
1620 return BUTTON_SLIDER;
|
|
|
1621
|
|
|
1622 return BUTTON_TROUGH_BELOW;
|
|
|
1623 }
|
|
|
1624
|
|
|
1625 static void
|
|
|
1626 Select (Widget widget, XEvent *event, String *parms, Cardinal *num_parms)
|
|
|
1627 {
|
|
|
1628 XlwScrollBarWidget w = (XlwScrollBarWidget) widget;
|
|
|
1629 button_where sb_button;
|
|
|
1630
|
|
|
1631 int mouse_x = event_x (w, event);
|
|
|
1632 int mouse_y = event_y (w, event);
|
|
|
1633
|
|
|
1634 int last_value = w->sb.savedValue = w->sb.value;
|
|
|
1635 int reason = XmCR_NONE;
|
|
|
1636
|
|
|
1637 XtGrabKeyboard ((Widget) w, False, GrabModeAsync, GrabModeAsync,
|
|
|
1638 event->xbutton.time);
|
|
|
1639
|
|
|
1640 sb_button = what_button (w, mouse_x, mouse_y);
|
|
|
1641
|
|
|
1642 if (w->sb.forced_scroll != FORCED_SCROLL_NONE)
|
|
|
1643 {
|
|
|
1644 switch (sb_button)
|
|
|
1645 {
|
|
|
1646 case BUTTON_TROUGH_ABOVE:
|
|
|
1647 case BUTTON_TROUGH_BELOW:
|
|
|
1648 case BUTTON_SLIDER:
|
|
|
1649 sb_button= BUTTON_NONE; /* cause next switch to fall through */
|
|
|
1650 if (w->sb.forced_scroll == FORCED_SCROLL_UPLEFT)
|
|
|
1651 {
|
|
|
1652 decrement_value (w, w->sb.pageIncrement);
|
|
|
1653 w->sb.armed = ARM_PAGEUP;
|
|
|
1654 reason = XmCR_PAGE_DECREMENT;
|
|
|
1655 break;
|
|
|
1656 }
|
|
|
1657 else if (w->sb.forced_scroll == FORCED_SCROLL_DOWNRIGHT)
|
|
|
1658 {
|
|
|
1659 increment_value (w, w->sb.pageIncrement);
|
|
|
1660 w->sb.armed = ARM_PAGEDOWN;
|
|
|
1661 reason = XmCR_PAGE_INCREMENT;
|
|
|
1662 break;
|
|
|
1663 }
|
|
|
1664 abort();
|
|
|
1665 default:
|
|
|
1666 ; /* Do nothing */
|
|
|
1667 }
|
|
|
1668 }
|
|
|
1669
|
|
|
1670 switch (sb_button)
|
|
|
1671 {
|
|
|
1672 case BUTTON_TROUGH_ABOVE:
|
|
|
1673 decrement_value (w, w->sb.pageIncrement);
|
|
|
1674 w->sb.armed = ARM_PAGEUP;
|
|
|
1675 reason = XmCR_PAGE_DECREMENT;
|
|
|
1676 break;
|
|
|
1677 case BUTTON_TROUGH_BELOW:
|
|
|
1678 increment_value (w, w->sb.pageIncrement);
|
|
|
1679 w->sb.armed = ARM_PAGEDOWN;
|
|
|
1680 reason = XmCR_PAGE_INCREMENT;
|
|
|
1681 break;
|
|
|
1682 case BUTTON_SLIDER:
|
|
|
1683 w->sb.lastY = mouse_y;
|
|
|
1684 w->sb.armed = ARM_SLIDER;
|
|
|
1685 draw_slider (w, w->sb.above, w->sb.ss, w->sb.below);
|
|
|
1686 break;
|
|
|
1687 case BUTTON_UP_ARROW:
|
|
|
1688 if (event->xbutton.state & ControlMask)
|
|
|
1689 {
|
|
|
1690 w->sb.value = w->sb.minimum;
|
|
|
1691 reason = XmCR_TO_TOP;
|
|
|
1692 }
|
|
|
1693 else
|
|
|
1694 {
|
|
|
1695 decrement_value (w, w->sb.increment);
|
|
|
1696 reason = XmCR_DECREMENT;
|
|
|
1697 }
|
|
|
1698 w->sb.armed = ARM_UP;
|
|
|
1699 redraw_up_arrow (w, True, False);
|
|
|
1700 break;
|
|
|
1701 case BUTTON_DOWN_ARROW:
|
|
|
1702 if (event->xbutton.state & ControlMask)
|
|
|
1703 {
|
|
|
1704 w->sb.value = w->sb.maximum;
|
|
|
1705 reason = XmCR_TO_BOTTOM;
|
|
|
1706 }
|
|
|
1707 else
|
|
|
1708 {
|
|
|
1709 increment_value (w, w->sb.increment);
|
|
|
1710 reason = XmCR_INCREMENT;
|
|
|
1711 }
|
|
|
1712 w->sb.armed = ARM_DOWN;
|
|
|
1713 redraw_down_arrow (w, True, False);
|
|
|
1714 break;
|
|
|
1715 case BUTTON_NONE:
|
|
|
1716 ; /* Do nothing */
|
|
|
1717 }
|
|
|
1718
|
|
|
1719 verify_values (w);
|
|
|
1720
|
|
|
1721 if (last_value != w->sb.value)
|
|
|
1722 {
|
|
|
1723 seg_pixel_sizes (w, &w->sb.above, &w->sb.ss, &w->sb.below);
|
|
|
1724 draw_slider (w, w->sb.above, w->sb.ss, w->sb.below);
|
|
|
1725
|
|
|
1726 call_callbacks (w, reason, w->sb.value, mouse_y, event);
|
|
|
1727
|
|
|
1728 if (w->sb.timerActive)
|
|
|
1729 XtRemoveTimeOut (w->sb.timerId);
|
|
|
1730
|
|
|
1731 w->sb.timerId =
|
|
|
1732 XtAppAddTimeOut (XtWidgetToApplicationContext ((Widget) w),
|
|
|
1733 (unsigned long) w->sb.initialDelay,
|
|
|
1734 timer, (XtPointer) w);
|
|
|
1735 w->sb.timerActive = True;
|
|
|
1736 }
|
|
|
1737
|
|
|
1738 CHECK (w);
|
|
|
1739 }
|
|
|
1740
|
|
|
1741 static void
|
|
|
1742 PageDownOrRight (Widget widget, XEvent *event, String *parms, Cardinal *num_parms)
|
|
|
1743 {
|
|
|
1744 XlwScrollBarWidget w = (XlwScrollBarWidget) widget;
|
|
|
1745 w->sb.forced_scroll = FORCED_SCROLL_DOWNRIGHT;
|
|
|
1746 Select (widget, event, parms, num_parms);
|
|
|
1747 w->sb.forced_scroll = FORCED_SCROLL_NONE;
|
|
|
1748 }
|
|
|
1749
|
|
|
1750 static void
|
|
|
1751 PageUpOrLeft (Widget widget, XEvent *event, String *parms, Cardinal *num_parms)
|
|
|
1752 {
|
|
|
1753 XlwScrollBarWidget w = (XlwScrollBarWidget) widget;
|
|
|
1754 w->sb.forced_scroll = FORCED_SCROLL_UPLEFT;
|
|
|
1755 Select (widget, event, parms, num_parms);
|
|
|
1756 w->sb.forced_scroll = FORCED_SCROLL_NONE;
|
|
|
1757 }
|
|
|
1758
|
|
|
1759 static void
|
|
|
1760 Drag (Widget widget, XEvent *event, String *parms, Cardinal *num_parms)
|
|
|
1761 {
|
|
|
1762 XlwScrollBarWidget w = (XlwScrollBarWidget) widget;
|
|
|
1763
|
|
|
1764 if (w->sb.armed == ARM_SLIDER)
|
|
|
1765 {
|
|
|
1766 int mouse_y = event_y (w, event);
|
|
|
1767 int diff = mouse_y - w->sb.lastY;
|
|
|
1768
|
|
|
1769 if (diff < -(w->sb.above)) /* up */
|
|
|
1770 {
|
|
|
1771 mouse_y -= (diff + w->sb.above);
|
|
|
1772 diff = -(w->sb.above);
|
|
|
1773 }
|
|
|
1774 else if (diff > w->sb.below) /* down */
|
|
|
1775 {
|
|
|
1776 mouse_y -= (diff - w->sb.below);
|
|
|
1777 diff = w->sb.below;
|
|
|
1778 }
|
|
|
1779
|
|
|
1780 if (diff)
|
|
|
1781 {
|
|
|
1782 w->sb.above += diff;
|
|
|
1783 w->sb.below -= diff;
|
|
|
1784
|
|
|
1785 draw_slider (w, w->sb.above, w->sb.ss, w->sb.below);
|
|
|
1786
|
|
|
1787 w->sb.lastY = mouse_y;
|
|
|
1788
|
|
|
1789 w->sb.value = value_from_pixel (w, w->sb.above);
|
|
|
1790 verify_values (w);
|
|
|
1791 CHECK (w);
|
|
|
1792
|
|
|
1793 call_callbacks (w, XmCR_DRAG, w->sb.value, event_y (w, event), event);
|
|
|
1794 }
|
|
|
1795 }
|
|
|
1796 CHECK (w);
|
|
|
1797 }
|
|
|
1798
|
|
|
1799 static void
|
|
|
1800 Release (Widget widget, XEvent *event, String *parms, Cardinal *num_parms)
|
|
|
1801 {
|
|
|
1802 XlwScrollBarWidget w = (XlwScrollBarWidget) widget;
|
|
|
1803
|
|
|
1804 switch (w->sb.armed)
|
|
|
1805 {
|
|
|
1806 case ARM_SLIDER:
|
|
|
1807 call_callbacks (w, XmCR_VALUE_CHANGED, w->sb.value, event_y (w, event), event);
|
|
|
1808 w->sb.armed = ARM_NONE;
|
|
|
1809 draw_slider (w, w->sb.above, w->sb.ss, w->sb.below);
|
|
|
1810 break;
|
|
|
1811 case ARM_UP:
|
|
|
1812 redraw_up_arrow (w, False, False);
|
|
|
1813 break;
|
|
|
1814 case ARM_DOWN:
|
|
|
1815 redraw_down_arrow (w, False, False);
|
|
|
1816 break;
|
|
|
1817 default:
|
|
|
1818 ; /* Do nothing */
|
|
|
1819 }
|
|
|
1820
|
|
|
1821 XtUngrabKeyboard ((Widget) w, event->xbutton.time);
|
|
|
1822
|
|
|
1823 w->sb.armed = ARM_NONE;
|
|
|
1824 }
|
|
|
1825
|
|
|
1826 static void
|
|
|
1827 Jump (Widget widget, XEvent *event, String *parms, Cardinal *num_parms)
|
|
|
1828 {
|
|
|
1829 XlwScrollBarWidget w = (XlwScrollBarWidget) widget;
|
|
|
1830 int last_value;
|
|
|
1831
|
|
|
1832 int mouse_x = event_x (w, event);
|
|
|
1833 int mouse_y = event_y (w, event);
|
|
|
1834
|
|
|
1835 int scroll_region_y = widget_y (w);
|
|
|
1836 int scroll_region_h = widget_h (w);
|
|
|
1837
|
|
|
1838 if (w->sb.showArrows)
|
|
|
1839 {
|
|
|
1840 int arrow_height = arrow_h (w);
|
|
|
1841 scroll_region_h -= 2 * arrow_height;
|
|
|
1842 if (!arrow_same_end (w))
|
|
|
1843 scroll_region_y += arrow_height;
|
|
|
1844 }
|
|
|
1845
|
|
|
1846 XtGrabKeyboard ((Widget) w, False, GrabModeAsync, GrabModeAsync,
|
|
|
1847 event->xbutton.time);
|
|
|
1848
|
|
|
1849 switch (what_button (w, mouse_x, mouse_y))
|
|
|
1850 {
|
|
|
1851 case BUTTON_TROUGH_ABOVE:
|
|
|
1852 case BUTTON_TROUGH_BELOW:
|
|
|
1853 case BUTTON_SLIDER:
|
|
|
1854 w->sb.savedValue = w->sb.value;
|
|
|
1855
|
|
|
1856 last_value = w->sb.value;
|
|
|
1857
|
|
|
1858 w->sb.above = mouse_y - (w->sb.ss / 2) - scroll_region_y;
|
|
|
1859 if (w->sb.above < 0)
|
|
|
1860 w->sb.above = 0;
|
|
|
1861 else if (w->sb.above + w->sb.ss > scroll_region_h)
|
|
|
1862 w->sb.above = scroll_region_h - w->sb.ss;
|
|
|
1863
|
|
|
1864 w->sb.below = scroll_region_h - w->sb.ss - w->sb.above;
|
|
|
1865
|
|
|
1866 w->sb.armed = ARM_SLIDER;
|
|
|
1867 draw_slider (w, w->sb.above, w->sb.ss, w->sb.below);
|
|
|
1868
|
|
|
1869 w->sb.value = value_from_pixel (w, w->sb.above);
|
|
|
1870 verify_values (w);
|
|
|
1871 CHECK (w);
|
|
|
1872
|
|
|
1873 w->sb.lastY = mouse_y;
|
|
|
1874
|
|
|
1875 if (w->sb.value != last_value)
|
|
|
1876 call_callbacks (w, XmCR_DRAG, w->sb.value, mouse_y, event);
|
|
|
1877
|
|
|
1878 break;
|
|
|
1879 default:
|
|
|
1880 ; /* Do nothing */
|
|
|
1881 }
|
|
|
1882 CHECK (w);
|
|
|
1883 }
|
|
|
1884
|
|
|
1885 static void
|
|
|
1886 Abort (Widget widget, XEvent *event, String *parms, Cardinal *num_parms)
|
|
|
1887 {
|
|
|
1888 XlwScrollBarWidget w = (XlwScrollBarWidget) widget;
|
|
|
1889
|
|
|
1890 if (w->sb.armed != ARM_NONE)
|
|
|
1891 {
|
|
|
1892 if (w->sb.value != w->sb.savedValue)
|
|
|
1893 {
|
|
|
1894 w->sb.value = w->sb.savedValue;
|
|
|
1895
|
|
|
1896 seg_pixel_sizes (w, &w->sb.above, &w->sb.ss, &w->sb.below);
|
|
|
1897 draw_slider (w, w->sb.above, w->sb.ss, w->sb.below);
|
|
|
1898
|
|
|
1899 call_callbacks (w, XmCR_VALUE_CHANGED, w->sb.value,
|
|
|
1900 event_y (w, event), event);
|
|
|
1901 }
|
|
|
1902
|
|
|
1903 switch (w->sb.armed)
|
|
|
1904 {
|
|
|
1905 case ARM_UP: redraw_up_arrow (w, False, False); break;
|
|
|
1906 case ARM_DOWN: redraw_down_arrow (w, False, False); break;
|
|
|
1907 default: ; /* Do nothing */
|
|
|
1908 }
|
|
|
1909
|
|
|
1910 w->sb.armed = ARM_NONE;
|
|
|
1911
|
|
|
1912 XtUngrabKeyboard ((Widget) w, event->xbutton.time);
|
|
|
1913 }
|
|
|
1914 }
|
