Mercurial > vim
annotate src/gui_at_sb.c @ 10945:725f932fae37
Added tag v8.0.0361 for changeset 4e2cdce4576c5d4bb49c20296b2fbc8698975f38
| author | Christian Brabandt <cb@256bit.org> |
|---|---|
| date | Thu, 23 Feb 2017 19:45:05 +0100 |
| parents | 4aead6a9b7a9 |
| children | 90af0c60d78d |
| rev | line source |
|---|---|
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commit https://github.com/vim/vim/commit/edf3f97ae2af024708ebb4ac614227327033ca47
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1 /* vi:set ts=8 sts=4 sw=4 noet: */ |
| 7 | 2 /* |
| 3 * MODIFIED ATHENA SCROLLBAR (USING ARROWHEADS AT ENDS OF TRAVEL) | |
| 4 * Modifications Copyright 1992 by Mitch Trachtenberg | |
| 5 * Rights, permissions, and disclaimer of warranty are as in the DEC and MIT | |
| 6 * notice below. | |
| 7 * $XConsortium: Scrollbar.c,v 1.72 94/04/17 20:12:40 kaleb Exp $ | |
| 8 */ | |
| 9 | |
| 10 /* | |
| 11 * Modified for Vim by Bill Foster and Bram Moolenaar | |
| 12 */ | |
| 13 | |
| 14 /* | |
| 15 | |
| 16 Copyright (c) 1987, 1988, 1994 X Consortium | |
| 17 | |
| 18 Permission is hereby granted, free of charge, to any person obtaining a copy | |
| 19 of this software and associated documentation files (the "Software"), to deal | |
| 20 in the Software without restriction, including without limitation the rights | |
| 21 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | |
| 22 copies of the Software, and to permit persons to whom the Software is | |
| 23 furnished to do so, subject to the following conditions: | |
| 24 | |
| 25 The above copyright notice and this permission notice shall be included in all | |
| 26 copies or substantial portions of the Software. | |
| 27 | |
| 28 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
| 29 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
| 30 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE X | |
| 31 CONSORTIUM BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN | |
| 32 ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION | |
| 33 WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. | |
| 34 | |
| 35 Except as contained in this notice, the name of the X Consortium shall not be | |
| 36 used in advertising or otherwise to promote the sale, use or other dealings in | |
| 37 this Software without prior written authorization from the X Consortium. | |
| 38 | |
| 39 Copyright 1987, 1988 by Digital Equipment Corporation, Maynard, Massachusetts. | |
| 40 | |
| 41 All Rights Reserved | |
| 42 | |
| 43 Permission to use, copy, modify, and distribute this software and its | |
| 44 documentation for any purpose and without fee is hereby granted, provided that | |
| 45 the above copyright notice appear in all copies and that both that copyright | |
| 46 notice and this permission notice appear in supporting documentation, and that | |
| 47 the name of Digital not be used in advertising or publicity pertaining to | |
| 48 distribution of the software without specific, written prior permission. | |
| 49 | |
| 50 DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL | |
| 51 IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL DIGITAL | |
| 52 BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES | |
| 53 WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION | |
| 54 OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN | |
| 55 CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. | |
| 56 | |
| 57 */ | |
| 58 | |
| 59 /* ScrollBar.c */ | |
| 60 /* created by weissman, Mon Jul 7 13:20:03 1986 */ | |
| 61 /* converted by swick, Thu Aug 27 1987 */ | |
| 62 | |
| 63 #include <X11/IntrinsicP.h> | |
| 64 #include <X11/StringDefs.h> | |
| 65 | |
| 66 #include <X11/Xaw/XawInit.h> | |
| 67 #include "vim.h" | |
| 68 #include "gui_at_sb.h" | |
| 69 | |
| 70 #include <X11/Xmu/Drawing.h> | |
| 71 | |
| 72 /* Private definitions. */ | |
| 73 | |
| 74 static char defaultTranslations[] = | |
| 75 "<Btn1Down>: NotifyScroll()\n\ | |
| 76 <Btn2Down>: MoveThumb() NotifyThumb()\n\ | |
| 77 <Btn3Down>: NotifyScroll()\n\ | |
| 78 <Btn4Down>: ScrollOneLineUp()\n\ | |
| 79 Shift<Btn4Down>: ScrollPageUp()\n\ | |
| 80 <Btn5Down>: ScrollOneLineDown()\n\ | |
| 81 Shift<Btn5Down>: ScrollPageDown()\n\ | |
| 82 <Btn1Motion>: HandleThumb()\n\ | |
| 83 <Btn3Motion>: HandleThumb()\n\ | |
| 84 <Btn2Motion>: MoveThumb() NotifyThumb()\n\ | |
| 85 <BtnUp>: EndScroll()"; | |
| 86 | |
| 87 static float floatZero = 0.0; | |
| 88 | |
| 89 #define Offset(field) XtOffsetOf(ScrollbarRec, field) | |
| 90 | |
| 91 static XtResource resources[] = | |
| 92 { | |
| 93 {XtNlength, XtCLength, XtRDimension, sizeof(Dimension), | |
| 94 Offset(scrollbar.length), XtRImmediate, (XtPointer) 1}, | |
| 95 {XtNthickness, XtCThickness, XtRDimension, sizeof(Dimension), | |
| 96 Offset(scrollbar.thickness), XtRImmediate, (XtPointer) 14}, | |
| 97 {XtNorientation, XtCOrientation, XtROrientation, sizeof(XtOrientation), | |
| 98 Offset(scrollbar.orientation), XtRImmediate, (XtPointer) XtorientVertical}, | |
| 99 {XtNscrollProc, XtCCallback, XtRCallback, sizeof(XtPointer), | |
| 100 Offset(scrollbar.scrollProc), XtRCallback, NULL}, | |
| 101 {XtNthumbProc, XtCCallback, XtRCallback, sizeof(XtPointer), | |
| 102 Offset(scrollbar.thumbProc), XtRCallback, NULL}, | |
| 103 {XtNjumpProc, XtCCallback, XtRCallback, sizeof(XtPointer), | |
| 104 Offset(scrollbar.jumpProc), XtRCallback, NULL}, | |
| 105 {XtNthumb, XtCThumb, XtRBitmap, sizeof(Pixmap), | |
| 106 Offset(scrollbar.thumb), XtRImmediate, (XtPointer) XtUnspecifiedPixmap}, | |
| 107 {XtNforeground, XtCForeground, XtRPixel, sizeof(Pixel), | |
| 108 Offset(scrollbar.foreground), XtRString, XtDefaultForeground}, | |
| 109 {XtNshown, XtCShown, XtRFloat, sizeof(float), | |
| 110 Offset(scrollbar.shown), XtRFloat, (XtPointer)&floatZero}, | |
| 111 {XtNtopOfThumb, XtCTopOfThumb, XtRFloat, sizeof(float), | |
| 112 Offset(scrollbar.top), XtRFloat, (XtPointer)&floatZero}, | |
| 113 {XtNmaxOfThumb, XtCMaxOfThumb, XtRFloat, sizeof(float), | |
| 114 Offset(scrollbar.max), XtRFloat, (XtPointer)&floatZero}, | |
| 115 {XtNminimumThumb, XtCMinimumThumb, XtRDimension, sizeof(Dimension), | |
| 116 Offset(scrollbar.min_thumb), XtRImmediate, (XtPointer) 7}, | |
| 117 {XtNshadowWidth, XtCShadowWidth, XtRDimension, sizeof(Dimension), | |
| 118 Offset(scrollbar.shadow_width), XtRImmediate, (XtPointer) 1}, | |
| 119 {XtNtopShadowPixel, XtCTopShadowPixel, XtRPixel, sizeof(Pixel), | |
| 120 Offset(scrollbar.top_shadow_pixel), XtRString, XtDefaultBackground}, | |
| 121 {XtNbottomShadowPixel, XtCBottomShadowPixel, XtRPixel, sizeof(Pixel), | |
| 122 Offset(scrollbar.bot_shadow_pixel), XtRString, XtDefaultForeground}, | |
| 123 {XtNlimitThumb, XtCLimitThumb, XtRBool, sizeof(Bool), | |
| 124 Offset(scrollbar.limit_thumb), XtRImmediate, (XtPointer)0} | |
| 125 }; | |
| 126 #undef Offset | |
| 127 | |
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128 static void ClassInitialize(void); |
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129 static void Initialize(Widget, Widget, ArgList, Cardinal *); |
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130 static void Destroy(Widget); |
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131 static void Realize(Widget, Mask *, XSetWindowAttributes *); |
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132 static void Resize(Widget); |
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133 static void Redisplay(Widget, XEvent *, Region); |
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134 static Boolean SetValues(Widget, Widget, Widget, ArgList, Cardinal *); |
| 7 | 135 |
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136 static void HandleThumb(Widget, XEvent *, String *, Cardinal *); |
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137 static void MoveThumb(Widget, XEvent *, String *, Cardinal *); |
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138 static void NotifyThumb(Widget, XEvent *, String *, Cardinal *); |
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139 static void NotifyScroll(Widget, XEvent *, String *, Cardinal *); |
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140 static void EndScroll(Widget, XEvent *, String *, Cardinal *); |
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141 static void ScrollOneLineUp(Widget, XEvent *, String *, Cardinal *); |
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142 static void ScrollOneLineDown(Widget, XEvent *, String *, Cardinal *); |
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143 static void ScrollPageUp(Widget, XEvent *, String *, Cardinal *); |
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144 static void ScrollPageDown(Widget, XEvent *, String *, Cardinal *); |
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145 static void ScrollSome(Widget w, XEvent *event, int call_data); |
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146 static void _Xaw3dDrawShadows(Widget, XEvent *, Region, int); |
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147 static void AllocTopShadowGC(Widget); |
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148 static void AllocBotShadowGC(Widget); |
| 7 | 149 |
| 150 static XtActionsRec actions[] = | |
| 151 { | |
| 152 {"HandleThumb", HandleThumb}, | |
| 153 {"MoveThumb", MoveThumb}, | |
| 154 {"NotifyThumb", NotifyThumb}, | |
| 155 {"NotifyScroll", NotifyScroll}, | |
| 156 {"EndScroll", EndScroll}, | |
| 157 {"ScrollOneLineUp", ScrollOneLineUp}, | |
| 158 {"ScrollOneLineDown", ScrollOneLineDown}, | |
| 159 {"ScrollPageUp", ScrollPageUp}, | |
| 160 {"ScrollPageDown", ScrollPageDown} | |
| 161 }; | |
| 162 | |
| 163 | |
| 164 ScrollbarClassRec vim_scrollbarClassRec = | |
| 165 { | |
| 166 { /* core fields */ | |
| 167 /* superclass */ (WidgetClass) &simpleClassRec, | |
| 168 /* class_name */ "Scrollbar", | |
| 169 /* size */ sizeof(ScrollbarRec), | |
| 170 /* class_initialize */ ClassInitialize, | |
| 171 /* class_part_init */ NULL, | |
| 172 /* class_inited */ FALSE, | |
| 173 /* initialize */ Initialize, | |
| 174 /* initialize_hook */ NULL, | |
| 175 /* realize */ Realize, | |
| 176 /* actions */ actions, | |
| 177 /* num_actions */ XtNumber(actions), | |
| 178 /* resources */ resources, | |
| 179 /* num_resources */ XtNumber(resources), | |
| 180 /* xrm_class */ NULLQUARK, | |
| 181 /* compress_motion */ TRUE, | |
| 182 /* compress_exposure*/ TRUE, | |
| 183 /* compress_enterleave*/ TRUE, | |
| 184 /* visible_interest */ FALSE, | |
| 185 /* destroy */ Destroy, | |
| 186 /* resize */ Resize, | |
| 187 /* expose */ Redisplay, | |
| 188 /* set_values */ SetValues, | |
| 189 /* set_values_hook */ NULL, | |
| 190 /* set_values_almost */ XtInheritSetValuesAlmost, | |
| 191 /* get_values_hook */ NULL, | |
| 192 /* accept_focus */ NULL, | |
| 193 /* version */ XtVersion, | |
| 194 /* callback_private */ NULL, | |
| 195 /* tm_table */ defaultTranslations, | |
| 196 /* query_geometry */ XtInheritQueryGeometry, | |
| 197 /* display_accelerator*/ XtInheritDisplayAccelerator, | |
| 198 /* extension */ NULL | |
| 199 }, | |
| 200 { /* simple fields */ | |
| 1887 | 201 /* change_sensitive */ XtInheritChangeSensitive, |
| 202 #ifndef OLDXAW | |
| 203 /* extension */ NULL | |
| 204 #endif | |
| 7 | 205 }, |
| 206 { /* scrollbar fields */ | |
| 1887 | 207 /* empty */ 0 |
| 7 | 208 } |
| 209 }; | |
| 210 | |
| 211 WidgetClass vim_scrollbarWidgetClass = (WidgetClass)&vim_scrollbarClassRec; | |
| 212 | |
| 213 #define NoButton -1 | |
| 214 #define PICKLENGTH(widget, x, y) \ | |
| 215 ((widget->scrollbar.orientation == XtorientHorizontal) ? (x) : (y)) | |
| 216 #define AT_MIN(x,y) ((x) < (y) ? (x) : (y)) | |
| 217 #define AT_MAX(x,y) ((x) > (y) ? (x) : (y)) | |
| 218 | |
| 219 #define LINE_DELAY 300 | |
| 220 #define PAGE_DELAY 300 | |
| 221 #define LINE_REPEAT 50 | |
| 222 #define PAGE_REPEAT 250 | |
| 223 | |
| 224 static void | |
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225 ClassInitialize(void) |
| 7 | 226 { |
| 227 XawInitializeWidgetSet(); | |
| 228 XtAddConverter( XtRString, XtROrientation, XmuCvtStringToOrientation, | |
| 229 (XtConvertArgList)NULL, (Cardinal)0 ); | |
| 230 } | |
| 231 | |
| 232 #define MARGIN(sbw) (sbw)->scrollbar.thickness + (sbw)->scrollbar.shadow_width | |
| 233 | |
| 234 static void | |
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235 FillArea( |
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236 ScrollbarWidget sbw, |
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237 Position top, |
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238 Position bottom, |
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239 int fill, |
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240 int draw_shadow) |
| 7 | 241 { |
| 242 int tlen = bottom - top; /* length of thumb in pixels */ | |
| 243 int sw, margin, floor; | |
| 244 int lx, ly, lw, lh; | |
| 245 | |
| 246 if (bottom <= 0 || bottom <= top) | |
| 247 return; | |
| 1887 | 248 sw = sbw->scrollbar.shadow_width; |
| 249 if (sw < 0) | |
| 7 | 250 sw = 0; |
| 251 margin = MARGIN (sbw); | |
| 252 floor = sbw->scrollbar.length - margin + 2; | |
| 253 | |
| 254 if (sbw->scrollbar.orientation == XtorientHorizontal) | |
| 255 { | |
| 256 lx = ((top < margin) ? margin : top); | |
| 257 ly = sw; | |
| 258 lw = (((top + tlen) > floor) ? floor - top : tlen); | |
| 259 lh = sbw->core.height - 2 * sw; | |
| 260 } | |
| 261 else | |
| 262 { | |
| 263 lx = sw; | |
| 264 ly = ((top < margin) ? margin : top); | |
| 265 lw = sbw->core.width - 2 * sw; | |
| 266 lh = (((top + tlen) > floor) ? floor - top : tlen); | |
| 267 } | |
| 268 if (lh <= 0 || lw <= 0) | |
| 269 return; | |
| 270 | |
| 271 if (draw_shadow) | |
| 272 { | |
| 273 if (!(sbw->scrollbar.orientation == XtorientHorizontal)) | |
| 274 { | |
| 275 /* Top border */ | |
| 276 XDrawLine (XtDisplay ((Widget) sbw), XtWindow ((Widget) sbw), | |
| 277 sbw->scrollbar.top_shadow_GC, | |
| 278 lx, ly, lx + lw - 1, ly); | |
| 279 | |
| 280 /* Bottom border */ | |
| 281 XDrawLine (XtDisplay ((Widget) sbw), XtWindow ((Widget) sbw), | |
| 282 sbw->scrollbar.bot_shadow_GC, | |
| 283 lx, ly + lh - 1, lx + lw - 1, ly + lh - 1); | |
| 284 } | |
| 285 else | |
| 286 { | |
| 287 /* Left border */ | |
| 288 XDrawLine (XtDisplay ((Widget) sbw), XtWindow ((Widget) sbw), | |
| 289 sbw->scrollbar.top_shadow_GC, | |
| 290 lx, ly, lx, ly + lh - 1); | |
| 291 | |
| 292 /* Right border */ | |
| 293 XDrawLine (XtDisplay ((Widget) sbw), XtWindow ((Widget) sbw), | |
| 294 sbw->scrollbar.bot_shadow_GC, | |
| 295 lx + lw - 1, ly, lx + lw - 1, ly + lh - 1); | |
| 296 } | |
| 297 return; | |
| 298 } | |
| 299 | |
| 300 if (fill) | |
| 301 { | |
| 302 XFillRectangle(XtDisplay((Widget) sbw), XtWindow((Widget) sbw), | |
| 303 sbw->scrollbar.gc, | |
| 304 lx, ly, (unsigned int) lw, (unsigned int) lh); | |
| 305 | |
| 306 if (!(sbw->scrollbar.orientation == XtorientHorizontal)) | |
| 307 { | |
| 308 /* Left border */ | |
| 309 XDrawLine(XtDisplay ((Widget) sbw), XtWindow ((Widget) sbw), | |
| 310 sbw->scrollbar.top_shadow_GC, | |
| 311 lx, ly, lx, ly + lh - 1); | |
| 312 | |
| 313 /* Right border */ | |
| 314 XDrawLine(XtDisplay ((Widget) sbw), XtWindow ((Widget) sbw), | |
| 315 sbw->scrollbar.bot_shadow_GC, | |
| 316 lx + lw - 1, ly, lx + lw - 1, ly + lh - 1); | |
| 317 } | |
| 318 else | |
| 319 { | |
| 320 /* Top border */ | |
| 321 XDrawLine(XtDisplay ((Widget) sbw), XtWindow ((Widget) sbw), | |
| 322 sbw->scrollbar.top_shadow_GC, | |
| 323 lx, ly, lx + lw - 1, ly); | |
| 324 | |
| 325 /* Bottom border */ | |
| 326 XDrawLine(XtDisplay ((Widget) sbw), XtWindow ((Widget) sbw), | |
| 327 sbw->scrollbar.bot_shadow_GC, | |
| 328 lx, ly + lh - 1, lx + lw - 1, ly + lh - 1); | |
| 329 } | |
| 330 } | |
| 331 else | |
| 332 { | |
| 333 XClearArea(XtDisplay((Widget) sbw), XtWindow((Widget) sbw), | |
| 334 lx, ly, (unsigned int) lw, (unsigned int) lh, FALSE); | |
| 335 } | |
| 336 } | |
| 337 | |
| 338 /* Paint the thumb in the area specified by sbw->top and | |
| 339 sbw->shown. The old area is erased. The painting and | |
| 340 erasing is done cleverly so that no flickering will occur. | |
| 341 */ | |
| 342 | |
| 343 static void | |
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344 PaintThumb(ScrollbarWidget sbw) |
| 7 | 345 { |
| 346 Position oldtop, oldbot, newtop, newbot; | |
| 347 Dimension margin, tzl; | |
| 348 | |
| 349 margin = MARGIN (sbw); | |
| 350 tzl = sbw->scrollbar.length - 2 * margin; | |
| 351 newtop = margin + (int)(tzl * sbw->scrollbar.top); | |
| 352 newbot = newtop + (int)(tzl * sbw->scrollbar.shown) + 1; | |
| 353 if (newbot < newtop + (int)sbw->scrollbar.min_thumb) | |
| 354 newbot = newtop + sbw->scrollbar.min_thumb; | |
| 355 | |
| 356 oldtop = sbw->scrollbar.topLoc; | |
| 357 oldbot = oldtop + sbw->scrollbar.shownLength; | |
| 358 sbw->scrollbar.topLoc = newtop; | |
| 359 sbw->scrollbar.shownLength = newbot - newtop; | |
| 360 if (XtIsRealized ((Widget) sbw)) | |
| 361 { | |
| 362 if (newtop < oldtop) | |
| 363 FillArea(sbw, newtop, AT_MIN(newbot, oldtop+1),1,0); | |
| 364 if (newtop > oldtop) | |
| 365 FillArea(sbw, oldtop, AT_MIN(newtop, oldbot ),0,0); | |
| 366 if (newbot < oldbot) | |
| 367 FillArea(sbw, AT_MAX(newbot, oldtop), oldbot, 0,0); | |
| 368 if (newbot > oldbot) | |
| 369 FillArea(sbw, AT_MAX(newtop, oldbot-1), newbot, 1,0); | |
| 370 | |
| 371 /* Only draw the missing shadows */ | |
| 372 FillArea(sbw, newtop, newbot, 0, 1); | |
| 373 } | |
| 374 } | |
| 375 | |
| 376 static void | |
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377 PaintArrows(ScrollbarWidget sbw) |
| 7 | 378 { |
| 379 XPoint point[6]; | |
| 380 Dimension thickness = sbw->scrollbar.thickness - 1; | |
| 381 Dimension size; | |
| 382 Dimension off; | |
| 383 | |
| 384 if (XtIsRealized((Widget) sbw)) | |
| 385 { | |
| 386 if ((int)thickness * 2 > (int)sbw->scrollbar.length) | |
| 387 { | |
| 388 size = sbw->scrollbar.length / 2; | |
| 389 off = (int)(thickness - size) / 2; | |
| 390 } | |
| 391 else | |
| 392 { | |
| 393 size = thickness; | |
| 394 off = 0; | |
| 395 } | |
| 396 point[0].x = off + sbw->scrollbar.shadow_width; | |
| 397 point[0].y = size; | |
| 398 point[1].x = thickness - off - sbw->scrollbar.shadow_width; | |
| 399 point[1].y = size; | |
| 400 point[2].x = thickness / 2; | |
| 401 point[2].y = sbw->scrollbar.shadow_width; | |
| 402 | |
| 403 point[3].x = off + sbw->scrollbar.shadow_width; | |
| 404 point[3].y = sbw->scrollbar.length - size; | |
| 405 point[4].x = thickness - off - sbw->scrollbar.shadow_width; | |
| 406 point[4].y = sbw->scrollbar.length - size; | |
| 407 point[5].x = thickness / 2; | |
| 408 point[5].y = sbw->scrollbar.length - sbw->scrollbar.shadow_width - 1; | |
| 409 | |
| 410 /* horizontal arrows require that x and y coordinates be swapped */ | |
| 411 if (sbw->scrollbar.orientation == XtorientHorizontal) | |
| 412 { | |
| 413 int n; | |
| 414 int swap; | |
| 415 for (n = 0; n < 6; n++) | |
| 416 { | |
| 417 swap = point[n].x; | |
| 418 point[n].x = point[n].y; | |
| 419 point[n].y = swap; | |
| 420 } | |
| 421 } | |
| 422 /* draw the up/left arrow */ | |
| 423 XFillPolygon (XtDisplay ((Widget) sbw), XtWindow ((Widget) sbw), | |
| 424 sbw->scrollbar.gc, | |
| 425 point, 3, | |
| 426 Convex, CoordModeOrigin); | |
| 427 XDrawLines (XtDisplay ((Widget) sbw), XtWindow ((Widget) sbw), | |
| 428 sbw->scrollbar.bot_shadow_GC, | |
| 429 point, 3, | |
| 430 CoordModeOrigin); | |
| 431 XDrawLine (XtDisplay ((Widget) sbw), XtWindow ((Widget) sbw), | |
| 432 sbw->scrollbar.top_shadow_GC, | |
| 433 point[0].x, point[0].y, | |
| 434 point[2].x, point[2].y); | |
| 435 /* draw the down/right arrow */ | |
| 436 XFillPolygon (XtDisplay ((Widget) sbw), XtWindow ((Widget) sbw), | |
| 437 sbw->scrollbar.gc, | |
| 438 point+3, 3, | |
| 439 Convex, CoordModeOrigin); | |
| 440 XDrawLine (XtDisplay ((Widget) sbw), XtWindow ((Widget) sbw), | |
| 441 sbw->scrollbar.top_shadow_GC, | |
| 442 point[3].x, point[3].y, | |
| 443 point[4].x, point[4].y); | |
| 444 XDrawLine (XtDisplay ((Widget) sbw), XtWindow ((Widget) sbw), | |
| 445 sbw->scrollbar.top_shadow_GC, | |
| 446 point[3].x, point[3].y, | |
| 447 point[5].x, point[5].y); | |
| 448 XDrawLine (XtDisplay ((Widget) sbw), XtWindow ((Widget) sbw), | |
| 449 sbw->scrollbar.bot_shadow_GC, | |
| 450 point[4].x, point[4].y, | |
| 451 point[5].x, point[5].y); | |
| 452 } | |
| 453 } | |
| 454 | |
| 455 static void | |
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456 Destroy(Widget w) |
| 7 | 457 { |
| 458 ScrollbarWidget sbw = (ScrollbarWidget) w; | |
| 459 if (sbw->scrollbar.timer_id != (XtIntervalId) 0) | |
| 460 XtRemoveTimeOut (sbw->scrollbar.timer_id); | |
| 461 XtReleaseGC(w, sbw->scrollbar.gc); | |
| 462 XtReleaseGC(w, sbw->scrollbar.top_shadow_GC); | |
| 463 XtReleaseGC(w, sbw->scrollbar.bot_shadow_GC); | |
| 464 } | |
| 465 | |
| 466 static void | |
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467 CreateGC(Widget w) |
| 7 | 468 { |
| 469 ScrollbarWidget sbw = (ScrollbarWidget) w; | |
| 470 XGCValues gcValues; | |
| 471 XtGCMask mask; | |
| 472 unsigned int depth = 1; | |
| 473 | |
| 474 if (sbw->scrollbar.thumb == XtUnspecifiedPixmap) | |
| 475 { | |
| 476 sbw->scrollbar.thumb = XmuCreateStippledPixmap (XtScreen(w), | |
| 477 (Pixel) 1, (Pixel) 0, depth); | |
| 478 } | |
| 479 else if (sbw->scrollbar.thumb != None) | |
| 480 { | |
| 481 Window root; | |
| 482 int x, y; | |
| 483 unsigned int width, height, bw; | |
| 484 | |
| 485 if (XGetGeometry (XtDisplay(w), sbw->scrollbar.thumb, &root, &x, &y, | |
| 486 &width, &height, &bw, &depth) == 0) | |
| 487 EMSG(_("Scrollbar Widget: Could not get geometry of thumb pixmap.")); | |
| 488 } | |
| 489 | |
| 490 gcValues.foreground = sbw->scrollbar.foreground; | |
| 491 gcValues.background = sbw->core.background_pixel; | |
| 492 mask = GCForeground | GCBackground; | |
| 493 | |
| 494 if (sbw->scrollbar.thumb != None) | |
| 495 { | |
| 496 gcValues.fill_style = FillSolid; | |
| 497 mask |= GCFillStyle; | |
| 498 } | |
| 499 /* the creation should be non-caching, because */ | |
| 500 /* we now set and clear clip masks on the gc returned */ | |
| 501 sbw->scrollbar.gc = XtGetGC (w, mask, &gcValues); | |
| 502 } | |
| 503 | |
| 504 static void | |
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505 SetDimensions(ScrollbarWidget sbw) |
| 7 | 506 { |
| 507 if (sbw->scrollbar.orientation == XtorientVertical) | |
| 508 { | |
| 509 sbw->scrollbar.length = sbw->core.height; | |
| 510 sbw->scrollbar.thickness = sbw->core.width; | |
| 511 } | |
| 512 else | |
| 513 { | |
| 514 sbw->scrollbar.length = sbw->core.width; | |
| 515 sbw->scrollbar.thickness = sbw->core.height; | |
| 516 } | |
| 517 } | |
| 518 | |
| 519 static void | |
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520 Initialize( |
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521 Widget request UNUSED, /* what the client asked for */ |
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522 Widget new, /* what we're going to give him */ |
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523 ArgList args UNUSED, |
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524 Cardinal *num_args UNUSED) |
| 7 | 525 { |
| 526 ScrollbarWidget sbw = (ScrollbarWidget) new; | |
| 527 | |
| 528 CreateGC(new); | |
| 529 AllocTopShadowGC(new); | |
| 530 AllocBotShadowGC(new); | |
| 531 | |
| 532 if (sbw->core.width == 0) | |
| 533 sbw->core.width = (sbw->scrollbar.orientation == XtorientVertical) | |
| 534 ? sbw->scrollbar.thickness : sbw->scrollbar.length; | |
| 535 | |
| 536 if (sbw->core.height == 0) | |
| 537 sbw->core.height = (sbw->scrollbar.orientation == XtorientHorizontal) | |
| 538 ? sbw->scrollbar.thickness : sbw->scrollbar.length; | |
| 539 | |
| 540 SetDimensions(sbw); | |
| 541 sbw->scrollbar.scroll_mode = SMODE_NONE; | |
| 542 sbw->scrollbar.timer_id = (XtIntervalId)0; | |
| 543 sbw->scrollbar.topLoc = 0; | |
| 544 sbw->scrollbar.shownLength = sbw->scrollbar.min_thumb; | |
| 545 } | |
| 546 | |
| 547 static void | |
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548 Realize( |
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549 Widget w, |
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550 Mask *valueMask, |
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551 XSetWindowAttributes *attributes) |
| 7 | 552 { |
| 553 /* The Simple widget actually stuffs the value in the valuemask. */ | |
| 554 (*vim_scrollbarWidgetClass->core_class.superclass->core_class.realize) | |
| 555 (w, valueMask, attributes); | |
| 556 } | |
| 557 | |
| 558 static Boolean | |
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559 SetValues( |
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560 Widget current, /* what I am */ |
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561 Widget request UNUSED, /* what he wants me to be */ |
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562 Widget desired, /* what I will become */ |
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563 ArgList args UNUSED, |
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564 Cardinal *num_args UNUSED) |
| 7 | 565 { |
| 566 ScrollbarWidget sbw = (ScrollbarWidget) current; | |
| 567 ScrollbarWidget dsbw = (ScrollbarWidget) desired; | |
| 568 Boolean redraw = FALSE; | |
| 569 | |
| 570 /* | |
| 571 * If these values are outside the acceptable range ignore them... | |
| 572 */ | |
| 573 if (dsbw->scrollbar.top < 0.0 || dsbw->scrollbar.top > 1.0) | |
| 574 dsbw->scrollbar.top = sbw->scrollbar.top; | |
| 575 | |
| 576 if (dsbw->scrollbar.shown < 0.0 || dsbw->scrollbar.shown > 1.0) | |
| 577 dsbw->scrollbar.shown = sbw->scrollbar.shown; | |
| 578 | |
| 579 /* | |
| 580 * Change colors and stuff... | |
| 581 */ | |
| 582 if (XtIsRealized(desired)) | |
| 583 { | |
| 584 if (sbw->scrollbar.foreground != dsbw->scrollbar.foreground || | |
| 585 sbw->core.background_pixel != dsbw->core.background_pixel || | |
| 586 sbw->scrollbar.thumb != dsbw->scrollbar.thumb) | |
| 587 { | |
| 588 XtReleaseGC(desired, sbw->scrollbar.gc); | |
| 589 CreateGC (desired); | |
| 590 redraw = TRUE; | |
| 591 } | |
| 592 if (sbw->scrollbar.top != dsbw->scrollbar.top || | |
| 593 sbw->scrollbar.shown != dsbw->scrollbar.shown) | |
| 594 redraw = TRUE; | |
| 595 } | |
| 596 return redraw; | |
| 597 } | |
| 598 | |
| 599 static void | |
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600 Resize(Widget w) |
| 7 | 601 { |
| 602 /* ForgetGravity has taken care of background, but thumb may | |
| 603 * have to move as a result of the new size. */ | |
| 604 SetDimensions ((ScrollbarWidget) w); | |
| 605 Redisplay(w, (XEvent*) NULL, (Region)NULL); | |
| 606 } | |
| 607 | |
| 608 | |
| 609 static void | |
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610 Redisplay(Widget w, XEvent *event, Region region) |
| 7 | 611 { |
| 612 ScrollbarWidget sbw = (ScrollbarWidget) w; | |
| 613 int x, y; | |
| 614 unsigned int width, height; | |
| 615 | |
| 616 _Xaw3dDrawShadows(w, event, region, FALSE); | |
| 617 | |
| 618 if (sbw->scrollbar.orientation == XtorientHorizontal) | |
| 619 { | |
| 620 x = sbw->scrollbar.topLoc; | |
| 621 y = 1; | |
| 622 width = sbw->scrollbar.shownLength; | |
| 623 height = sbw->core.height - 2; | |
| 624 } | |
| 625 else | |
| 626 { | |
| 627 x = 1; | |
| 628 y = sbw->scrollbar.topLoc; | |
| 629 width = sbw->core.width - 2; | |
| 630 height = sbw->scrollbar.shownLength; | |
| 631 } | |
| 632 if (region == NULL || | |
| 633 XRectInRegion (region, x, y, width, height) != RectangleOut) | |
| 634 { | |
| 635 /* Forces entire thumb to be painted. */ | |
| 636 sbw->scrollbar.topLoc = -(sbw->scrollbar.length + 1); | |
| 637 PaintThumb (sbw); | |
| 638 } | |
| 639 /* we'd like to be region aware here!!!! */ | |
| 640 PaintArrows(sbw); | |
| 641 } | |
| 642 | |
| 643 | |
| 644 static Boolean | |
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645 CompareEvents(XEvent *oldEvent, XEvent *newEvent) |
| 7 | 646 { |
| 647 #define Check(field) if (newEvent->field != oldEvent->field) return False; | |
| 648 | |
| 649 Check(xany.display); | |
| 650 Check(xany.type); | |
| 651 Check(xany.window); | |
| 652 | |
| 653 switch (newEvent->type) | |
| 654 { | |
| 655 case MotionNotify: | |
| 656 Check(xmotion.state); | |
| 657 break; | |
| 658 case ButtonPress: | |
| 659 case ButtonRelease: | |
| 660 Check(xbutton.state); | |
| 661 Check(xbutton.button); | |
| 662 break; | |
| 663 case KeyPress: | |
| 664 case KeyRelease: | |
| 665 Check(xkey.state); | |
| 666 Check(xkey.keycode); | |
| 667 break; | |
| 668 case EnterNotify: | |
| 669 case LeaveNotify: | |
| 670 Check(xcrossing.mode); | |
| 671 Check(xcrossing.detail); | |
| 672 Check(xcrossing.state); | |
| 673 break; | |
| 674 } | |
| 675 #undef Check | |
| 676 | |
| 677 return True; | |
| 678 } | |
| 679 | |
| 680 struct EventData | |
| 681 { | |
| 682 XEvent *oldEvent; | |
| 683 int count; | |
| 684 }; | |
| 685 | |
| 686 static Bool | |
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687 PeekNotifyEvent(Display *dpy, XEvent *event, char *args) |
| 7 | 688 { |
| 689 struct EventData *eventData = (struct EventData*)args; | |
| 690 | |
| 691 return ((++eventData->count == QLength(dpy)) /* since PeekIf blocks */ | |
| 692 || CompareEvents(event, eventData->oldEvent)); | |
| 693 } | |
| 694 | |
| 695 | |
| 696 static Boolean | |
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697 LookAhead(Widget w, XEvent *event) |
| 7 | 698 { |
| 699 XEvent newEvent; | |
| 700 struct EventData eventData; | |
| 701 | |
| 702 if (QLength (XtDisplay (w)) == 0) | |
| 703 return False; | |
| 704 | |
| 705 eventData.count = 0; | |
| 706 eventData.oldEvent = event; | |
| 707 | |
| 708 XPeekIfEvent (XtDisplay (w), &newEvent, PeekNotifyEvent, (char*)&eventData); | |
| 709 | |
| 710 return CompareEvents (event, &newEvent); | |
| 711 } | |
| 712 | |
| 713 | |
| 714 static void | |
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715 ExtractPosition( |
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716 XEvent *event, |
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717 Position *x, /* RETURN */ |
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718 Position *y, /* RETURN */ |
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719 unsigned int *state) /* RETURN */ |
| 7 | 720 { |
| 721 switch (event->type) | |
| 722 { | |
| 723 case MotionNotify: | |
| 724 *x = event->xmotion.x; | |
| 725 *y = event->xmotion.y; | |
| 726 if (state != NULL) | |
| 727 *state = event->xmotion.state; | |
| 728 break; | |
| 729 case ButtonPress: | |
| 730 case ButtonRelease: | |
| 731 *x = event->xbutton.x; | |
| 732 *y = event->xbutton.y; | |
| 733 if (state != NULL) | |
| 734 *state = event->xbutton.state; | |
| 735 break; | |
| 736 case KeyPress: | |
| 737 case KeyRelease: | |
| 738 *x = event->xkey.x; | |
| 739 *y = event->xkey.y; | |
| 740 if (state != NULL) | |
| 741 *state = event->xkey.state; | |
| 742 break; | |
| 743 case EnterNotify: | |
| 744 case LeaveNotify: | |
| 745 *x = event->xcrossing.x; | |
| 746 *y = event->xcrossing.y; | |
| 747 if (state != NULL) | |
| 748 *state = event->xcrossing.state; | |
| 749 break; | |
| 750 default: | |
| 751 *x = 0; *y = 0; | |
| 752 if (state != NULL) | |
| 753 *state = 0; | |
| 754 } | |
| 755 } | |
| 756 | |
| 757 static void | |
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758 HandleThumb( |
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759 Widget w, |
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760 XEvent *event, |
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761 String *params, |
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762 Cardinal *num_params) |
| 7 | 763 { |
| 764 Position x, y, loc; | |
| 765 ScrollbarWidget sbw = (ScrollbarWidget) w; | |
| 766 | |
| 767 ExtractPosition(event, &x, &y, (unsigned int *)NULL); | |
| 768 loc = PICKLENGTH(sbw, x, y); | |
| 769 /* if the motion event puts the pointer in thumb, call Move and Notify */ | |
| 770 /* also call Move and Notify if we're already in continuous scroll mode */ | |
| 771 if (sbw->scrollbar.scroll_mode == SMODE_CONT || | |
| 772 (loc >= sbw->scrollbar.topLoc && | |
| 773 loc <= sbw->scrollbar.topLoc + (int)sbw->scrollbar.shownLength)) | |
| 774 { | |
| 775 XtCallActionProc(w, "MoveThumb", event, params, *num_params); | |
| 776 XtCallActionProc(w, "NotifyThumb", event, params, *num_params); | |
| 777 } | |
| 778 } | |
| 779 | |
| 780 static void | |
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781 RepeatNotify(XtPointer client_data, XtIntervalId *idp UNUSED) |
| 7 | 782 { |
| 783 ScrollbarWidget sbw = (ScrollbarWidget) client_data; | |
| 784 int call_data; | |
| 785 char mode = sbw->scrollbar.scroll_mode; | |
| 786 unsigned long rep; | |
| 787 | |
| 788 if (mode == SMODE_NONE || mode == SMODE_CONT) | |
| 789 { | |
| 790 sbw->scrollbar.timer_id = (XtIntervalId)0; | |
| 791 return; | |
| 792 } | |
| 793 | |
| 794 if (mode == SMODE_LINE_DOWN || mode == SMODE_LINE_UP) | |
| 795 { | |
| 796 call_data = ONE_LINE_DATA; | |
| 797 rep = LINE_REPEAT; | |
| 798 } | |
| 799 else | |
| 800 { | |
| 801 call_data = ONE_PAGE_DATA; | |
| 802 rep = PAGE_REPEAT; | |
| 803 } | |
| 804 | |
| 805 if (mode == SMODE_PAGE_UP || mode == SMODE_LINE_UP) | |
| 806 call_data = -call_data; | |
| 807 | |
| 2255 | 808 XtCallCallbacks((Widget)sbw, XtNscrollProc, (XtPointer)(long_u)call_data); |
| 7 | 809 |
| 810 sbw->scrollbar.timer_id = | |
| 811 XtAppAddTimeOut(XtWidgetToApplicationContext((Widget)sbw), | |
| 812 rep, | |
| 813 RepeatNotify, | |
| 814 client_data); | |
| 815 } | |
| 816 | |
| 817 /* | |
| 818 * Same as above, but for floating numbers. | |
| 819 */ | |
| 820 static float | |
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821 FloatInRange(float num, float small, float big) |
| 7 | 822 { |
| 823 return (num < small) ? small : ((num > big) ? big : num); | |
| 824 } | |
| 825 | |
| 826 static void | |
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827 ScrollOneLineUp( |
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828 Widget w, |
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829 XEvent *event, |
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830 String *params UNUSED, |
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831 Cardinal *num_params UNUSED) |
| 7 | 832 { |
| 833 ScrollSome(w, event, -ONE_LINE_DATA); | |
| 834 } | |
| 835 | |
| 836 static void | |
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837 ScrollOneLineDown( |
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838 Widget w, |
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839 XEvent *event, |
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840 String *params UNUSED, |
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841 Cardinal *num_params UNUSED) |
| 7 | 842 { |
| 843 ScrollSome(w, event, ONE_LINE_DATA); | |
| 844 } | |
| 845 | |
| 846 static void | |
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847 ScrollPageDown( |
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848 Widget w, |
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849 XEvent *event, |
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850 String *params UNUSED, |
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851 Cardinal *num_params UNUSED) |
| 7 | 852 { |
| 853 ScrollSome(w, event, ONE_PAGE_DATA); | |
| 854 } | |
| 855 | |
| 856 static void | |
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857 ScrollPageUp( |
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858 Widget w, |
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859 XEvent *event, |
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860 String *params UNUSED, |
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861 Cardinal *num_params UNUSED) |
| 7 | 862 { |
| 863 ScrollSome(w, event, -ONE_PAGE_DATA); | |
| 864 } | |
| 865 | |
| 866 static void | |
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867 ScrollSome( |
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868 Widget w, |
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869 XEvent *event, |
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870 int call_data) |
| 7 | 871 { |
| 872 ScrollbarWidget sbw = (ScrollbarWidget) w; | |
| 873 | |
| 874 if (sbw->scrollbar.scroll_mode == SMODE_CONT) /* if scroll continuous */ | |
| 875 return; | |
| 876 | |
| 877 if (LookAhead(w, event)) | |
| 878 return; | |
| 879 | |
| 880 sbw->scrollbar.scroll_mode = SMODE_LINE_UP; | |
| 2255 | 881 XtCallCallbacks(w, XtNscrollProc, (XtPointer)(long_u)call_data); |
| 7 | 882 } |
| 883 | |
| 884 static void | |
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885 NotifyScroll( |
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886 Widget w, |
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887 XEvent *event, |
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888 String *params UNUSED, |
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889 Cardinal *num_params UNUSED) |
| 7 | 890 { |
| 891 ScrollbarWidget sbw = (ScrollbarWidget) w; | |
| 892 Position x, y, loc; | |
| 893 Dimension arrow_size; | |
| 894 unsigned long delay = 0; | |
| 895 int call_data = 0; | |
| 896 unsigned int state; | |
| 897 | |
| 898 if (sbw->scrollbar.scroll_mode == SMODE_CONT) /* if scroll continuous */ | |
| 899 return; | |
| 900 | |
| 901 if (LookAhead (w, event)) | |
| 902 return; | |
| 903 | |
| 904 ExtractPosition(event, &x, &y, &state); | |
| 905 loc = PICKLENGTH(sbw, x, y); | |
| 906 | |
| 907 if ((int)sbw->scrollbar.thickness * 2 > (int)sbw->scrollbar.length) | |
| 908 arrow_size = sbw->scrollbar.length / 2; | |
| 909 else | |
| 910 arrow_size = sbw->scrollbar.thickness; | |
| 911 | |
| 912 /* | |
| 913 * handle CTRL modifier | |
| 914 */ | |
| 915 if (state & ControlMask) | |
| 916 { | |
| 917 if (loc > sbw->scrollbar.topLoc + (Position)sbw->scrollbar.shownLength) | |
| 918 call_data = END_PAGE_DATA; | |
| 919 else | |
| 920 call_data = -END_PAGE_DATA; | |
| 921 sbw->scrollbar.scroll_mode = SMODE_NONE; | |
| 922 } | |
| 923 /* | |
| 924 * handle first arrow zone | |
| 925 */ | |
| 926 else if (loc < (Position)arrow_size) | |
| 927 { | |
| 928 call_data = -ONE_LINE_DATA; | |
| 929 sbw->scrollbar.scroll_mode = SMODE_LINE_UP; | |
| 930 delay = LINE_DELAY; | |
| 931 } | |
| 932 | |
| 933 /* | |
| 934 * handle last arrow zone | |
| 935 */ | |
| 936 else if (loc > (Position)(sbw->scrollbar.length - arrow_size)) | |
| 937 { | |
| 938 call_data = ONE_LINE_DATA; | |
| 939 sbw->scrollbar.scroll_mode = SMODE_LINE_DOWN; | |
| 940 delay = LINE_DELAY; | |
| 941 } | |
| 942 | |
| 943 /* | |
| 944 * handle zone "above" the thumb | |
| 945 */ | |
| 946 else if (loc < sbw->scrollbar.topLoc) | |
| 947 { | |
| 948 call_data = -ONE_PAGE_DATA; | |
| 949 sbw->scrollbar.scroll_mode = SMODE_PAGE_UP; | |
| 950 delay = PAGE_DELAY; | |
| 951 } | |
| 952 | |
| 953 /* | |
| 954 * handle zone "below" the thumb | |
| 955 */ | |
| 956 else if (loc > sbw->scrollbar.topLoc + (Position)sbw->scrollbar.shownLength) | |
| 957 { | |
| 958 call_data = ONE_PAGE_DATA; | |
| 959 sbw->scrollbar.scroll_mode = SMODE_PAGE_DOWN; | |
| 960 delay = PAGE_DELAY; | |
| 961 } | |
| 962 | |
| 963 if (call_data) | |
| 2255 | 964 XtCallCallbacks(w, XtNscrollProc, (XtPointer)(long_u)call_data); |
| 7 | 965 |
| 966 /* establish autoscroll */ | |
| 967 if (delay) | |
| 968 sbw->scrollbar.timer_id = | |
| 969 XtAppAddTimeOut(XtWidgetToApplicationContext(w), | |
| 970 delay, RepeatNotify, (XtPointer)w); | |
| 971 } | |
| 972 | |
| 973 static void | |
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974 EndScroll( |
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975 Widget w, |
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976 XEvent *event UNUSED, |
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977 String *params UNUSED, |
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978 Cardinal *num_params UNUSED) |
| 7 | 979 { |
| 980 ScrollbarWidget sbw = (ScrollbarWidget) w; | |
| 981 | |
| 982 sbw->scrollbar.scroll_mode = SMODE_NONE; | |
| 983 /* no need to remove any autoscroll timeout; it will no-op */ | |
| 984 /* because the scroll_mode is SMODE_NONE */ | |
| 985 /* but be sure to remove timeout in destroy proc */ | |
| 986 } | |
| 987 | |
| 988 static float | |
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989 FractionLoc(ScrollbarWidget sbw, int x, int y) |
| 7 | 990 { |
| 991 int margin; | |
| 992 float height, width; | |
| 993 | |
| 994 margin = MARGIN(sbw); | |
| 995 x -= margin; | |
| 996 y -= margin; | |
| 997 height = (float)sbw->core.height - 2 * margin; | |
| 998 width = (float)sbw->core.width - 2 * margin; | |
| 999 return PICKLENGTH(sbw, x / width, y / height); | |
| 1000 } | |
| 1001 | |
| 1002 static void | |
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1003 MoveThumb( |
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1004 Widget w, |
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1005 XEvent *event, |
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1006 String *params UNUSED, |
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1007 Cardinal *num_params UNUSED) |
| 7 | 1008 { |
| 1009 ScrollbarWidget sbw = (ScrollbarWidget)w; | |
| 1010 Position x, y; | |
| 1011 float top; | |
| 1012 char old_mode = sbw->scrollbar.scroll_mode; | |
| 1013 | |
| 1014 sbw->scrollbar.scroll_mode = SMODE_CONT; /* indicate continuous scroll */ | |
| 1015 | |
| 1016 if (LookAhead(w, event)) | |
| 1017 return; | |
| 1018 | |
| 1019 if (!event->xmotion.same_screen) | |
| 1020 return; | |
| 1021 | |
| 1022 ExtractPosition(event, &x, &y, (unsigned int *)NULL); | |
| 1023 | |
| 1024 top = FractionLoc(sbw, x, y); | |
| 1025 | |
| 1026 if (old_mode != SMODE_CONT) /* start dragging: set offset */ | |
| 1027 { | |
| 1028 if (event->xbutton.button == Button2) | |
| 1029 sbw->scrollbar.scroll_off = sbw->scrollbar.shown / 2.; | |
| 1030 else | |
| 1031 sbw->scrollbar.scroll_off = top - sbw->scrollbar.top; | |
| 1032 } | |
| 1033 | |
| 1034 top -= sbw->scrollbar.scroll_off; | |
| 1035 if (sbw->scrollbar.limit_thumb) | |
| 1036 top = FloatInRange(top, 0.0, | |
| 1037 sbw->scrollbar.max - sbw->scrollbar.shown + 0.000001); | |
| 1038 else | |
| 1039 top = FloatInRange(top, 0.0, sbw->scrollbar.max); | |
| 1040 | |
| 1041 sbw->scrollbar.top = top; | |
| 1042 PaintThumb(sbw); | |
| 1043 XFlush(XtDisplay(w)); /* re-draw it before Notifying */ | |
| 1044 } | |
| 1045 | |
| 1046 | |
| 1047 static void | |
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1048 NotifyThumb( |
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1049 Widget w, |
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1050 XEvent *event, |
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1051 String *params UNUSED, |
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1052 Cardinal *num_params UNUSED) |
| 7 | 1053 { |
| 1054 ScrollbarWidget sbw = (ScrollbarWidget)w; | |
| 1757 | 1055 /* Use a union to avoid a warning for the weird conversion from float to |
| 1056 * XtPointer. Comes from Xaw/Scrollbar.c. */ | |
| 1057 union { | |
| 1058 XtPointer xtp; | |
| 1059 float xtf; | |
| 1060 } xtpf; | |
| 7 | 1061 |
| 1062 if (LookAhead(w, event)) | |
| 1063 return; | |
| 1064 | |
| 1065 /* thumbProc is not pretty, but is necessary for backwards | |
| 1066 compatibility on those architectures for which it work{s,ed}; | |
| 1067 the intent is to pass a (truncated) float by value. */ | |
| 1757 | 1068 xtpf.xtf = sbw->scrollbar.top; |
| 1069 XtCallCallbacks(w, XtNthumbProc, xtpf.xtp); | |
| 7 | 1070 XtCallCallbacks(w, XtNjumpProc, (XtPointer)&sbw->scrollbar.top); |
| 1071 } | |
| 1072 | |
| 1073 static void | |
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1074 AllocTopShadowGC(Widget w) |
| 7 | 1075 { |
| 1076 ScrollbarWidget sbw = (ScrollbarWidget) w; | |
| 1077 XtGCMask valuemask; | |
| 1078 XGCValues myXGCV; | |
| 1079 | |
| 1080 valuemask = GCForeground; | |
| 1081 myXGCV.foreground = sbw->scrollbar.top_shadow_pixel; | |
| 1082 sbw->scrollbar.top_shadow_GC = XtGetGC(w, valuemask, &myXGCV); | |
| 1083 } | |
| 1084 | |
| 1085 static void | |
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1086 AllocBotShadowGC(Widget w) |
| 7 | 1087 { |
| 1088 ScrollbarWidget sbw = (ScrollbarWidget) w; | |
| 1089 XtGCMask valuemask; | |
| 1090 XGCValues myXGCV; | |
| 1091 | |
| 1092 valuemask = GCForeground; | |
| 1093 myXGCV.foreground = sbw->scrollbar.bot_shadow_pixel; | |
| 1094 sbw->scrollbar.bot_shadow_GC = XtGetGC(w, valuemask, &myXGCV); | |
| 1095 } | |
| 1096 | |
| 1097 static void | |
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1098 _Xaw3dDrawShadows( |
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1099 Widget gw, |
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1100 XEvent *event UNUSED, |
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1101 Region region, |
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1102 int out) |
| 7 | 1103 { |
| 1104 XPoint pt[6]; | |
| 1105 ScrollbarWidget sbw = (ScrollbarWidget) gw; | |
| 1106 Dimension s = sbw->scrollbar.shadow_width; | |
| 1107 /* | |
| 1108 * draw the shadows using the core part width and height, | |
| 1109 * and the scrollbar part shadow_width. | |
| 1110 * | |
| 1111 * no point to do anything if the shadow_width is 0 or the | |
| 1112 * widget has not been realized. | |
| 1113 */ | |
| 1114 if (s > 0 && XtIsRealized(gw)) | |
| 1115 { | |
| 1116 Dimension h = sbw->core.height; | |
| 1117 Dimension w = sbw->core.width; | |
| 1118 Dimension wms = w - s; | |
| 1119 Dimension hms = h - s; | |
| 1120 Display *dpy = XtDisplay (gw); | |
| 1121 Window win = XtWindow (gw); | |
| 1122 GC top, bot; | |
| 1123 | |
| 1124 if (out) | |
| 1125 { | |
| 1126 top = sbw->scrollbar.top_shadow_GC; | |
| 1127 bot = sbw->scrollbar.bot_shadow_GC; | |
| 1128 } | |
| 1129 else | |
| 1130 { | |
| 1131 top = sbw->scrollbar.bot_shadow_GC; | |
| 1132 bot = sbw->scrollbar.top_shadow_GC; | |
| 1133 } | |
| 1134 | |
| 1135 /* top-left shadow */ | |
| 1136 if ((region == NULL) || | |
| 1137 (XRectInRegion (region, 0, 0, w, s) != RectangleOut) || | |
| 1138 (XRectInRegion (region, 0, 0, s, h) != RectangleOut)) | |
| 1139 { | |
| 1140 pt[0].x = 0; pt[0].y = h; | |
| 1141 pt[1].x = pt[1].y = 0; | |
| 1142 pt[2].x = w; pt[2].y = 0; | |
| 1143 pt[3].x = wms; pt[3].y = s; | |
| 1144 pt[4].x = pt[4].y = s; | |
| 1145 pt[5].x = s; pt[5].y = hms; | |
| 1146 XFillPolygon (dpy, win, top, pt, 6, Complex, CoordModeOrigin); | |
| 1147 } | |
| 1148 | |
| 1149 /* bottom-right shadow */ | |
| 1150 if ((region == NULL) || | |
| 1151 (XRectInRegion (region, 0, hms, w, s) != RectangleOut) || | |
| 1152 (XRectInRegion (region, wms, 0, s, h) != RectangleOut)) | |
| 1153 { | |
| 1154 pt[0].x = 0; pt[0].y = h; | |
| 1155 pt[1].x = w; pt[1].y = h; | |
| 1156 pt[2].x = w; pt[2].y = 0; | |
| 1157 pt[3].x = wms; pt[3].y = s; | |
| 1158 pt[4].x = wms; pt[4].y = hms; | |
| 1159 pt[5].x = s; pt[5].y = hms; | |
| 1160 XFillPolygon (dpy, win, bot, pt, 6, Complex, CoordModeOrigin); | |
| 1161 } | |
| 1162 } | |
| 1163 } | |
| 1164 | |
| 1165 | |
| 1166 /* | |
| 1167 * Set the scroll bar to the given location. | |
| 1168 */ | |
| 1169 void | |
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1170 vim_XawScrollbarSetThumb(Widget w, double top, double shown, double max) |
| 7 | 1171 { |
| 1172 ScrollbarWidget sbw = (ScrollbarWidget) w; | |
| 1173 | |
| 1174 if (sbw->scrollbar.scroll_mode == SMODE_CONT) /* if still thumbing */ | |
| 1175 return; | |
| 1176 | |
| 1177 sbw->scrollbar.max = (max > 1.0) ? 1.0 : | |
| 1178 (max >= 0.0) ? max : sbw->scrollbar.max; | |
| 1179 | |
| 1180 sbw->scrollbar.top = (top > sbw->scrollbar.max) ? sbw->scrollbar.max : | |
| 1181 (top >= 0.0) ? top : sbw->scrollbar.top; | |
| 1182 | |
| 1183 sbw->scrollbar.shown = (shown > 1.0) ? 1.0 : | |
| 1184 (shown >= 0.0) ? shown : sbw->scrollbar.shown; | |
| 1185 | |
| 1186 PaintThumb(sbw); | |
| 1187 } |