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