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225
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1 /* scrollbar implementation -- mswindows interface.
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2 Copyright (C) 1994, 1995 Board of Trustees, University of Illinois.
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3 Copyright (C) 1994 Amdhal Corporation.
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4 Copyright (C) 1995 Sun Microsystems, Inc.
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5 Copyright (C) 1995 Darrell Kindred <dkindred+@cmu.edu>.
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6
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7 This file is part of XEmacs.
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8
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9 XEmacs is free software; you can redistribute it and/or modify it
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10 under the terms of the GNU General Public License as published by the
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11 Free Software Foundation; either version 2, or (at your option) any
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12 later version.
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13
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14 XEmacs is distributed in the hope that it will be useful, but WITHOUT
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15 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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16 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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17 for more details.
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18
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19 You should have received a copy of the GNU General Public License
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20 along with XEmacs; see the file COPYING. If not, write to
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21 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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22 Boston, MA 02111-1307, USA. */
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23
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24 /* Synched up with: Not in FSF. */
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25
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26 #include <config.h>
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27 #include "lisp.h"
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28
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29 #include "console-msw.h"
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249
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30 #include "scrollbar-msw.h"
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31
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225
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32 #include "frame.h"
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33 #include "window.h"
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34 #include "events.h"
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35
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227
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36 /* This has really different semantics in Windows than in Motif.
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37 There's no corresponding method; we just do not change slider
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38 size while dragging. It makes the scrollbar look smother and
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39 prevents some weird behavior when scrolled near the bottom */
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40 static int inhibit_slider_size_change = 0;
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41
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225
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42 static void
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43 mswindows_create_scrollbar_instance (struct frame *f, int vertical,
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44 struct scrollbar_instance *sb)
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45 {
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46 int orientation;
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47
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48 sb->scrollbar_data = xnew_and_zero (struct mswindows_scrollbar_data);
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49
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50 if (vertical)
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51 orientation = SBS_VERT;
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52 else
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53 orientation = SBS_HORZ;
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54
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55 SCROLLBAR_MSW_HANDLE (sb) =
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56 CreateWindowEx(0, "SCROLLBAR", 0, orientation|WS_CHILD,
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57 CW_USEDEFAULT, CW_USEDEFAULT,
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58 CW_USEDEFAULT, CW_USEDEFAULT,
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59 FRAME_MSWINDOWS_HANDLE (f),
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60 NULL, NULL, NULL);
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61 SCROLLBAR_MSW_INFO (sb).fMask = SIF_ALL;
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62 GetScrollInfo(SCROLLBAR_MSW_HANDLE (sb), SB_CTL,
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63 &SCROLLBAR_MSW_INFO (sb));
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64 SetWindowLong (SCROLLBAR_MSW_HANDLE(sb), GWL_USERDATA, (LONG)sb);
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65
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66 #if 0
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67 {
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68 HWND h = SCROLLBAR_MSW_HANDLE (sb);
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69 int x = SetWindowLong (SCROLLBAR_MSW_HANDLE(sb), GWL_USERDATA, (LONG)sb);
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70 int y = GetLastError();
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71 struct scrollbar_instance *z = (struct scrollbar_instance *)GetWindowLong (SCROLLBAR_MSW_HANDLE(sb),
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72 GWL_USERDATA);
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73 *z = *z;
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74 }
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75 #endif
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76 }
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77
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78 static void
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79 mswindows_free_scrollbar_instance (struct scrollbar_instance *sb)
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80 {
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81 DestroyWindow (SCROLLBAR_MSW_HANDLE (sb));
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82 if (sb->scrollbar_data)
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83 xfree (sb->scrollbar_data);
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84 }
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85
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86 static void
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87 mswindows_release_scrollbar_instance (struct scrollbar_instance *sb)
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88 {
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89 ShowScrollBar (SCROLLBAR_MSW_HANDLE (sb), SB_CTL, 0);
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90 SCROLLBAR_MSW_SIZE (sb) = 0;
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91 }
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92
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93 #define UPDATE_POS_FIELD(field) \
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94 if (new_##field >= 0 && SCROLLBAR_MSW_DATA (sb)->field != new_##field) { \
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95 SCROLLBAR_MSW_DATA (sb)->field = new_##field; \
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96 pos_changed = 1; \
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97 }
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98
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99 static void
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100 mswindows_update_scrollbar_instance_values (struct window *w,
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101 struct scrollbar_instance *sb,
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102 int new_line_increment,
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103 int new_page_increment,
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104 int new_minimum, int new_maximum,
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105 int new_slider_size,
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106 int new_slider_position,
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107 int new_scrollbar_width,
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108 int new_scrollbar_height,
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109 int new_scrollbar_x,
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110 int new_scrollbar_y)
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111 {
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112 struct frame *f;
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113 int pos_changed = 0;
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114
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115 f = XFRAME (w->frame);
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116
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227
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117 #if 0
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118 stderr_out ("[%d, %d], page = %d, pos = %d, inhibit = %d\n", new_minimum, new_maximum,
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119 new_slider_size, new_slider_position,inhibit_slider_size_change);
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120 #endif
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121
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225
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122 /* These might be optimized, but since at least one will change at each
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123 call, it's probably not worth it. */
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227
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124 SCROLLBAR_MSW_INFO (sb).nMin = new_minimum;
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125 SCROLLBAR_MSW_INFO (sb).nMax = new_maximum;
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126 SCROLLBAR_MSW_INFO (sb).nPage = new_slider_size + 1; /* for DISABLENOSCROLL */
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225
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127 SCROLLBAR_MSW_INFO (sb).nPos = new_slider_position;
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227
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128 SCROLLBAR_MSW_INFO (sb).fMask = (inhibit_slider_size_change
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129 ? SIF_RANGE | SIF_POS
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130 : SIF_ALL | SIF_DISABLENOSCROLL);
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225
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131
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132 SetScrollInfo(SCROLLBAR_MSW_HANDLE (sb), SB_CTL, &SCROLLBAR_MSW_INFO (sb),
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227
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133 !pos_changed);
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225
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134
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135 UPDATE_POS_FIELD (scrollbar_x);
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136 UPDATE_POS_FIELD (scrollbar_y);
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137 UPDATE_POS_FIELD (scrollbar_width);
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138 UPDATE_POS_FIELD (scrollbar_height);
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139
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140 if (pos_changed)
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141 {
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142 MoveWindow(SCROLLBAR_MSW_HANDLE (sb),
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143 new_scrollbar_x, new_scrollbar_y,
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144 new_scrollbar_width, new_scrollbar_height,
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145 TRUE);
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146 }
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147 }
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148
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149 static void
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150 mswindows_update_scrollbar_instance_status (struct window *w,
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151 int active, int size,
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152 struct scrollbar_instance *sb)
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153 {
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154 struct frame *f = XFRAME (w->frame);
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155
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269
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156 if (SCROLLBAR_MSW_SIZE (sb) != size)
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157 {
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158 SCROLLBAR_MSW_SIZE (sb) = size;
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159 ShowScrollBar (SCROLLBAR_MSW_HANDLE (sb), SB_CTL,
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160 SCROLLBAR_MSW_SIZE (sb));
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161 SCROLLBAR_MSW_INFO(sb).fMask |= SIF_DISABLENOSCROLL;
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162 SetScrollInfo(SCROLLBAR_MSW_HANDLE (sb), SB_CTL, &SCROLLBAR_MSW_INFO (sb), TRUE);
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163 }
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225
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164 }
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165
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166 void
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167 mswindows_handle_scrollbar_event (HWND hwnd, int code, int pos)
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168 {
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169 struct frame *f;
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170 Lisp_Object win;
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171 struct scrollbar_instance *sb;
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172 SCROLLINFO scrollinfo;
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227
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173 int vert = GetWindowLong (hwnd, GWL_STYLE) & SBS_VERT;
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225
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174
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175 sb = (struct scrollbar_instance *)GetWindowLong (hwnd, GWL_USERDATA);
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176 win = real_window (sb->mirror, 1);
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177 f = XFRAME (XWINDOW (win)->frame);
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178
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227
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179 inhibit_slider_size_change = code == SB_THUMBTRACK;
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180
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181 /* SB_LINEDOWN == SB_CHARLEFT etc. This is the way they will
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182 always be - any Windows is binary compatible backward with
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183 old programs */
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184
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225
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185 switch (code)
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186 {
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187 case SB_LINEDOWN:
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227
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188 enqueue_misc_user_event(win,
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189 vert ? Qscrollbar_line_down : Qscrollbar_char_right,
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190 win);
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225
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191 break;
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192
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193 case SB_LINEUP:
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227
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194 enqueue_misc_user_event(win,
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195 vert ? Qscrollbar_line_up : Qscrollbar_char_left,
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196 win);
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225
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197 break;
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198
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199 case SB_PAGEDOWN:
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227
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200 enqueue_misc_user_event(win,
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201 vert ? Qscrollbar_page_down : Qscrollbar_page_right,
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202 vert ? Fcons (win, Qnil) : win);
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225
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203 break;
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204
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205 case SB_PAGEUP:
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227
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206 enqueue_misc_user_event(win,
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207 vert ? Qscrollbar_page_up : Qscrollbar_page_left,
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208 vert ? Fcons (win, Qnil) : win);
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225
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209 break;
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210
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211 case SB_BOTTOM:
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227
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212 enqueue_misc_user_event(win,
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213 vert ? Qscrollbar_to_bottom : Qscrollbar_to_right,
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214 win);
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225
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215 break;
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216
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217 case SB_TOP:
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227
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218 enqueue_misc_user_event(win,
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219 vert ? Qscrollbar_to_top : Qscrollbar_to_left,
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220 win);
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225
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221 break;
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222
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223 case SB_THUMBTRACK:
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224 case SB_THUMBPOSITION:
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227
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225 scrollinfo.cbSize = sizeof(SCROLLINFO);
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226 scrollinfo.fMask = SIF_TRACKPOS;
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227 GetScrollInfo (hwnd, SB_CTL, &scrollinfo);
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228 enqueue_misc_user_event (win,
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229 (vert ? Qscrollbar_vertical_drag
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230 : Qscrollbar_horizontal_drag),
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231 Fcons (win, make_int (scrollinfo.nTrackPos)));
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225
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232 break;
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233 }
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234 }
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235
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236 #ifdef MEMORY_USAGE_STATS
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237
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238 static int
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239 mswindows_compute_scrollbar_instance_usage (struct device *d,
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240 struct scrollbar_instance *inst,
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241 struct overhead_stats *ovstats)
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242 {
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243 int total = 0;
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244
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245 while (inst)
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246 {
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247 struct mswindows_scrollbar_data *data =
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248 (struct mswindows_scrollbar_data *) inst->scrollbar_data;
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249
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250 total += malloced_storage_size (data, sizeof (*data), ovstats);
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251 inst = inst->next;
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252 }
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253
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254 return total;
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255 }
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256
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257 #endif /* MEMORY_USAGE_STATS */
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258
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259 /************************************************************************/
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260 /* initialization */
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261 /************************************************************************/
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262
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263 void
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264 console_type_create_scrollbar_mswindows (void)
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265 {
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266 CONSOLE_HAS_METHOD (mswindows, create_scrollbar_instance);
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267 CONSOLE_HAS_METHOD (mswindows, free_scrollbar_instance);
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268 CONSOLE_HAS_METHOD (mswindows, release_scrollbar_instance);
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269 CONSOLE_HAS_METHOD (mswindows, update_scrollbar_instance_values);
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270 CONSOLE_HAS_METHOD (mswindows, update_scrollbar_instance_status);
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271 /* CONSOLE_HAS_METHOD (mswindows, scrollbar_width_changed_in_frame); */
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272 #ifdef MEMORY_USAGE_STATS
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273 CONSOLE_HAS_METHOD (mswindows, compute_scrollbar_instance_usage);
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274 #endif
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275 }
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276
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277 void
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278 vars_of_scrollbar_mswindows(void)
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279 {
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280 Fprovide (intern ("mswindows-scrollbars"));
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281 }
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282
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