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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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30 #include "frame.h"
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31 #include "window.h"
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32 #include "scrollbar-msw.h"
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33 #include "events.h"
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34 #include "event-msw.h"
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35
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36 static void
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37 mswindows_create_scrollbar_instance (struct frame *f, int vertical,
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38 struct scrollbar_instance *sb)
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39 {
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40 int orientation;
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41
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42 sb->scrollbar_data = xnew_and_zero (struct mswindows_scrollbar_data);
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43
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44 if (vertical)
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45 orientation = SBS_VERT;
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46 else
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47 orientation = SBS_HORZ;
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48
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49 SCROLLBAR_MSW_HANDLE (sb) =
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50 CreateWindowEx(0, "SCROLLBAR", 0, orientation|WS_CHILD,
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51 CW_USEDEFAULT, CW_USEDEFAULT,
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52 CW_USEDEFAULT, CW_USEDEFAULT,
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53 FRAME_MSWINDOWS_HANDLE (f),
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54 NULL, NULL, NULL);
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55 SCROLLBAR_MSW_INFO (sb).fMask = SIF_ALL;
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56 GetScrollInfo(SCROLLBAR_MSW_HANDLE (sb), SB_CTL,
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57 &SCROLLBAR_MSW_INFO (sb));
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58 SetWindowLong (SCROLLBAR_MSW_HANDLE(sb), GWL_USERDATA, (LONG)sb);
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59
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60 #if 0
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61 {
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62 HWND h = SCROLLBAR_MSW_HANDLE (sb);
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63 int x = SetWindowLong (SCROLLBAR_MSW_HANDLE(sb), GWL_USERDATA, (LONG)sb);
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64 int y = GetLastError();
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65 struct scrollbar_instance *z = (struct scrollbar_instance *)GetWindowLong (SCROLLBAR_MSW_HANDLE(sb),
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66 GWL_USERDATA);
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67 *z = *z;
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68 }
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69 #endif
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70 }
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71
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72 static void
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73 mswindows_free_scrollbar_instance (struct scrollbar_instance *sb)
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74 {
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75 DestroyWindow (SCROLLBAR_MSW_HANDLE (sb));
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76 if (sb->scrollbar_data)
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77 xfree (sb->scrollbar_data);
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78 }
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79
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80 static void
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81 mswindows_release_scrollbar_instance (struct scrollbar_instance *sb)
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82 {
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83 ShowScrollBar (SCROLLBAR_MSW_HANDLE (sb), SB_CTL, 0);
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84 SCROLLBAR_MSW_SIZE (sb) = 0;
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85 }
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86
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87 #define UPDATE_POS_FIELD(field) \
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88 if (new_##field >= 0 && SCROLLBAR_MSW_DATA (sb)->field != new_##field) { \
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89 SCROLLBAR_MSW_DATA (sb)->field = new_##field; \
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90 pos_changed = 1; \
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91 }
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92
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93 static void
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94 mswindows_update_scrollbar_instance_values (struct window *w,
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95 struct scrollbar_instance *sb,
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96 int new_line_increment,
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97 int new_page_increment,
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98 int new_minimum, int new_maximum,
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99 int new_slider_size,
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100 int new_slider_position,
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101 int new_scrollbar_width,
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102 int new_scrollbar_height,
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103 int new_scrollbar_x,
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104 int new_scrollbar_y)
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105 {
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106 struct frame *f;
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107 int pos_changed = 0;
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108
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109 f = XFRAME (w->frame);
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110
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111 /* These might be optimized, but since at least one will change at each
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112 call, it's probably not worth it. */
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113 SCROLLBAR_MSW_INFO (sb).nMin = new_minimum - 1;
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114 SCROLLBAR_MSW_INFO (sb).nMax = new_maximum - 1;
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115 SCROLLBAR_MSW_INFO (sb).nPage = new_slider_size;
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116 SCROLLBAR_MSW_INFO (sb).nPos = new_slider_position;
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117 SCROLLBAR_MSW_INFO (sb).fMask = SIF_ALL;
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118
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119 SetScrollInfo(SCROLLBAR_MSW_HANDLE (sb), SB_CTL, &SCROLLBAR_MSW_INFO (sb),
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120 TRUE);
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121
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122 UPDATE_POS_FIELD (scrollbar_x);
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123 UPDATE_POS_FIELD (scrollbar_y);
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124 UPDATE_POS_FIELD (scrollbar_width);
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125 UPDATE_POS_FIELD (scrollbar_height);
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126
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127 if (pos_changed)
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128 {
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129 MoveWindow(SCROLLBAR_MSW_HANDLE (sb),
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130 new_scrollbar_x, new_scrollbar_y,
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131 new_scrollbar_width, new_scrollbar_height,
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132 TRUE);
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133 }
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134 }
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135
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136 static void
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137 mswindows_update_scrollbar_instance_status (struct window *w,
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138 int active, int size,
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139 struct scrollbar_instance *sb)
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140 {
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141 struct frame *f = XFRAME (w->frame);
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142
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143 if (SCROLLBAR_MSW_SIZE (sb) != size) {
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144 SCROLLBAR_MSW_SIZE (sb) = size;
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145 ShowScrollBar (SCROLLBAR_MSW_HANDLE (sb), SB_CTL,
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146 SCROLLBAR_MSW_SIZE (sb));
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147 FRAMEMETH (f, set_frame_size, (f, FRAME_WIDTH (f), FRAME_HEIGHT (f)));
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148 }
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149 }
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150
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151 void
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152 mswindows_handle_scrollbar_event (HWND hwnd, int code, int pos)
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153 {
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154 struct frame *f;
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155 Lisp_Object win;
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156 struct scrollbar_instance *sb;
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157 SCROLLINFO scrollinfo;
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158
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159 sb = (struct scrollbar_instance *)GetWindowLong (hwnd, GWL_USERDATA);
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160 win = real_window (sb->mirror, 1);
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161 f = XFRAME (XWINDOW (win)->frame);
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162
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163 switch (code)
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164 {
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165 case SB_LINEDOWN:
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166 enqueue_misc_user_event(win, Qscrollbar_line_down, win);
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167 break;
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168
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169 case SB_LINEUP:
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170 enqueue_misc_user_event(win, Qscrollbar_line_up, win);
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171 break;
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172
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173 case SB_PAGEDOWN:
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174 enqueue_misc_user_event(win, Qscrollbar_page_down, Fcons (win, Qnil));
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175 break;
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176
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177 case SB_PAGEUP:
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178 enqueue_misc_user_event(win, Qscrollbar_page_up, Fcons (win, Qnil));
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179 break;
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180
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181 case SB_BOTTOM:
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182 enqueue_misc_user_event(win, Qscrollbar_to_bottom, win);
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183 break;
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184
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185 case SB_TOP:
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186 enqueue_misc_user_event(win, Qscrollbar_to_top, win);
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187 break;
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188
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189 case SB_THUMBTRACK:
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190 case SB_THUMBPOSITION:
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191 enqueue_misc_user_event (win, Qscrollbar_vertical_drag,
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192 Fcons (win, make_int (pos)));
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193 break;
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194 }
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195 }
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196
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197 #ifdef MEMORY_USAGE_STATS
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198
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199 static int
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200 mswindows_compute_scrollbar_instance_usage (struct device *d,
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201 struct scrollbar_instance *inst,
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202 struct overhead_stats *ovstats)
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203 {
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204 int total = 0;
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205
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206 while (inst)
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207 {
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208 struct mswindows_scrollbar_data *data =
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209 (struct mswindows_scrollbar_data *) inst->scrollbar_data;
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210
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211 total += malloced_storage_size (data, sizeof (*data), ovstats);
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212 inst = inst->next;
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213 }
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214
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215 return total;
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216 }
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217
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218 #endif /* MEMORY_USAGE_STATS */
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219
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220 /************************************************************************/
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221 /* initialization */
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222 /************************************************************************/
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223
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224 void
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225 console_type_create_scrollbar_mswindows (void)
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226 {
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227 CONSOLE_HAS_METHOD (mswindows, create_scrollbar_instance);
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228 CONSOLE_HAS_METHOD (mswindows, free_scrollbar_instance);
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229 CONSOLE_HAS_METHOD (mswindows, release_scrollbar_instance);
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230 CONSOLE_HAS_METHOD (mswindows, update_scrollbar_instance_values);
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231 CONSOLE_HAS_METHOD (mswindows, update_scrollbar_instance_status);
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232 /* CONSOLE_HAS_METHOD (mswindows, scrollbar_width_changed_in_frame); */
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233 #ifdef MEMORY_USAGE_STATS
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234 CONSOLE_HAS_METHOD (mswindows, compute_scrollbar_instance_usage);
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235 #endif
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236 }
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237
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238 void
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239 vars_of_scrollbar_mswindows(void)
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240 {
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241 Fprovide (intern ("mswindows-scrollbars"));
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242 }
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243
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