1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
|
/* Copyright (C) 1994 - 1996
Olav Woelfelschneider (wosch@rbg.informatik.th-darmstadt.de)
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public License as
published by the Free Software Foundation; either version 2 of the
License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with this library; see the file COPYING.LIB. If
not, write to the Free Software Foundation, Inc., 675 Mass Ave,
Cambridge, MA 02139, USA.
*/
#include <X11/keysym.h>
#include <X11/cursorfont.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <X11/Xatom.h>
#include "McApp.h"
#include "McGadget.h"
#include "McFocus.h"
#include "McDebug.h"
#include "McSlider.h"
#include "McViewBitmap.h"
#include "McSelection.h"
#include "McBuffer.h"
/**************************************************************************/
#define VIEWBITMAP ((McViewBitmap *)(gadget->specialInfo))
static void ViewBitmapCleanup(McGadget *gadget);
static int ViewBitmapEvent(McGadget *gadget, XEvent *event);
static void ViewBitmap_slider_update(McGadget *gadget,
McViewBitmap *ViewBitmap);
static int ViewBitmapKey(McGadget *gadget, XKeyEvent *event);
/**************************************************************************/
McSpecialInfo *McCreateViewBitmap(unsigned int flags) {
McViewBitmap *ViewBitmap = (McViewBitmap *) calloc(sizeof(McViewBitmap), 1);
ViewBitmap->flags = flags;
ViewBitmap->specialInfo.updateProc = McViewBitmapUpdate;
ViewBitmap->specialInfo.eventProc = ViewBitmapEvent;
ViewBitmap->specialInfo.keyboardProc = ViewBitmapKey;
ViewBitmap->specialInfo.cleanupProc = ViewBitmapCleanup;
ViewBitmap->size_x = 1;
ViewBitmap->size_y = 1;
ViewBitmap->home_x = 0;
ViewBitmap->home_y = 0;
ViewBitmap->pixmap = 0;
ViewBitmap->depth = 0;
return (McSpecialInfo *)ViewBitmap;
}
static void ViewBitmapCleanup(McGadget *gadget) {
free(gadget->specialInfo);
}
/**************************************************************************/
void McViewBitmapUpdate(McGadget *gadget, int busy, int all) {
McViewBitmap *ViewBitmap = (McViewBitmap *)gadget->specialInfo;
McWindow *mcw=gadget->mcw;
McApp *app=mcw->app;
if (ViewBitmap->pixmap) {
if (ViewBitmap->depth>1) {
XCopyArea(app->display, ViewBitmap->pixmap, gadget->win,
app->gc[GC_NORMAL],
ViewBitmap->home_x, ViewBitmap->home_y,
gadget->width, gadget->height, 0, 0);
} else {
XCopyPlane(app->display, ViewBitmap->pixmap, gadget->win,
app->gc[GC_NORMAL],
ViewBitmap->home_x, ViewBitmap->home_y,
gadget->width, gadget->height, 0, 0, 1);
}
}
ViewBitmap_slider_update(gadget, ViewBitmap);
McDrawFocusMark(gadget, COL_BACKGROUND);
}
/**************************************************************************/
static int ViewBitmapEvent(McGadget *gadget, XEvent *event) {
switch (event->type) {
case Expose:
return 0;
case ButtonPress:
if (event->xbutton.button!=1) return 0;
if (McInRectangle(event->xbutton.x, event->xbutton.y,
0, 0, gadget->width, gadget->height)) {
McMoveGadgetToStart(gadget);
McSetFocus(gadget);
return 1;
}
return 0;
}
return 0;
}
/**************************************************************************/
static int ViewBitmapKey(McGadget *gadget, XKeyEvent *event) {
int up=0, maxh, maxw, stepx, stepy;
McWindow *mcw=gadget->mcw;
McViewBitmap *viewbitmap = (McViewBitmap *)gadget->specialInfo;
maxh=viewbitmap->size_y-(gadget->height-BW)-1;
maxw=viewbitmap->size_x-(gadget->width-BW)-1;
if ((stepx=maxw/20)<4) if ((stepx=maxw/4)<1) stepx=1;
if ((stepy=maxh/20)<4) if ((stepy=maxh/4)<1) stepy=1;
switch((int)mcw->keysym) {
case XK_Home:
if (viewbitmap->home_x || viewbitmap->home_y) {
viewbitmap->home_x=0;
viewbitmap->home_y=0;
up=2;
} else {
up=1;
}
break;
case XK_End:
if ((viewbitmap->home_y!=maxh) || (viewbitmap->home_x!=maxw)) {
viewbitmap->home_x=maxw;
viewbitmap->home_y=maxh;
up=2;
} else {
up=1;
}
break;
case XK_Prior:
case XK_Up:
if (viewbitmap->home_y>0) {
viewbitmap->home_y-=stepy;
up=2;
} else {
up=1;
}
break;
case XK_Next:
case XK_Down:
if (viewbitmap->home_y<maxh) {
viewbitmap->home_y+=stepy;
up=2;
} else {
up=1;
}
break;
case XK_Left:
if (viewbitmap->home_x>0) {
viewbitmap->home_x-=stepx;
up=2;
} else {
up=1;
}
break;
case XK_Right:
if (viewbitmap->home_x<maxw) {
viewbitmap->home_x+=stepx;
up=2;
} else {
up=1;
}
break;
}
if (up&2) {
if (viewbitmap->home_y<0) viewbitmap->home_y=0;
if (viewbitmap->home_y>maxh) viewbitmap->home_y=maxh;
if (viewbitmap->home_x<0) viewbitmap->home_x=0;
if (viewbitmap->home_x>maxw) viewbitmap->home_x=maxw;
McViewBitmapUpdate(gadget, 0, 1);
}
return !!up;
}
/***************************************************************************/
McGadget *MakeViewBitmap(McWindow *mcw, int x, int y, int w, int h) {
McGadget *gadget;
if (w<=0) w=mcw->w-(BW<<2);
if (h<=0) h=mcw->h-(BW<<2);
if (x==0) x=(mcw->w>>1)-(w>>1); /* Center */
if (y==0) y=(mcw->h>>1)-(h>>1);
if (x<0) x=mcw->w+x-w-BW-BW-BW; /* Right justify */
if (y<0) y=mcw->h+y-h-BW-BW-BW;
gadget = McCreateGadget(mcw, GAD_3D|GAD_H3D|GAD_ACTIVE,
VIEWBITMAPGADGET, x, y, w, h);
gadget->specialInfo = McCreateViewBitmap(0);
return gadget;
}
/**************************************************************************/
static void ValidateHome(McGadget *gadget) {
McViewBitmap *ViewBitmap = (McViewBitmap *)gadget->specialInfo;
if (ViewBitmap->home_x >= ViewBitmap->size_x - gadget->width)
ViewBitmap->home_x = ViewBitmap->size_x - gadget->width;
if (ViewBitmap->home_y >= ViewBitmap->size_y - gadget->height)
ViewBitmap->home_y = ViewBitmap->size_y - gadget->height;
if (ViewBitmap->home_x < 0) ViewBitmap->home_x = 0;
if (ViewBitmap->home_y < 0) ViewBitmap->home_y = 0;
}
void McViewBitmapSetPixmap(McGadget *gadget, Pixmap pix, int depth,
int size_x, int size_y) {
McViewBitmap *ViewBitmap = (McViewBitmap *)gadget->specialInfo;
ViewBitmap->home_x = ViewBitmap->home_x * size_x / ViewBitmap->size_x;
ViewBitmap->home_y = ViewBitmap->home_y * size_y / ViewBitmap->size_y;
ViewBitmap->pixmap=pix;
ViewBitmap->depth=depth;
ViewBitmap->size_x=size_x;
ViewBitmap->size_y=size_y;
ValidateHome(gadget);
ViewBitmap_slider_update(gadget, ViewBitmap);
#if 0
fprintf(stderr, "home=%d/%d size=%d/%d gadget=%d/%d\n",
ViewBitmap->home_x, ViewBitmap->home_y,
ViewBitmap->size_x, ViewBitmap->size_y,
gadget->width, gadget->height);
#endif
}
/**************************************************************************/
void McViewBitmapSetHome(McGadget *gadget, int home_x, int home_y) {
McViewBitmap *ViewBitmap = (McViewBitmap *)gadget->specialInfo;
ViewBitmap->home_x = home_x;
ViewBitmap->home_y = home_y;
ValidateHome(gadget);
}
/**************************************************************************/
static void slider_ver_proc(McGadget *gadget);
static void slider_hor_proc(McGadget *gadget);
void McViewBitmapBindSliders(McGadget *bitgad,
McGadget *sliderhor, McGadget *sliderver) {
McViewBitmap *ViewBitmap = (McViewBitmap *)bitgad->specialInfo;
ViewBitmap->sliderhor = sliderhor;
ViewBitmap->sliderver = sliderver;
if (sliderhor) {
sliderhor->callbackUp = sliderhor->callbackDown = slider_hor_proc;
sliderhor->customData = bitgad;
}
if (sliderver) {
sliderver->callbackUp = sliderver->callbackDown = slider_ver_proc;
sliderver->customData = bitgad;
}
}
static void ViewBitmap_slider_update(McGadget *gadget,
McViewBitmap *ViewBitmap) {
McGadget *slidergad;
if ((slidergad=ViewBitmap->sliderhor)) {
McSlider *slider = (McSlider *)slidergad->specialInfo;
int max = ViewBitmap->size_x - gadget->width;
if (max<0) max=0;
slider->leftValue=slider->rightValue=ViewBitmap->home_x;
McSliderSetProps(slidergad, max, ViewBitmap->size_x);
McGadgetUpdate(slidergad);
}
if ((slidergad=ViewBitmap->sliderver)) {
McSlider *slider = (McSlider *)slidergad->specialInfo;
int max = ViewBitmap->size_y - gadget->height;
if (max<0) max=0;
slider->leftValue=slider->rightValue=max-ViewBitmap->home_y;
McSliderSetProps(slidergad, max, ViewBitmap->size_y);
McGadgetUpdate(slidergad);
}
}
static void slider_hor_proc(McGadget *gadget) {
McSlider *slider = (McSlider *)gadget->specialInfo;
McGadget *bitgad = (McGadget *)gadget->customData;
McViewBitmap *ViewBitmap = (McViewBitmap *)bitgad->specialInfo;
int col = slider->leftValue;
if (ViewBitmap->home_x!=col) {
ViewBitmap->home_x = col;
McViewBitmapUpdate(bitgad, 0, 1);
McSetFocus(bitgad);
}
}
static void slider_ver_proc(McGadget *gadget) {
McSlider *slider = (McSlider *)gadget->specialInfo;
McGadget *bitgad = (McGadget *)gadget->customData;
McViewBitmap *ViewBitmap = (McViewBitmap *)bitgad->specialInfo;
int row = slider->maxValue-slider->leftValue;
if (ViewBitmap->home_y!=row) {
ViewBitmap->home_y = row;
McViewBitmapUpdate(bitgad, 0, 1);
McSetFocus(bitgad);
}
}
|
