1 #include <ctype.h>
2 #include <rfb/rfb.h>
3 #include <rfb/keysym.h>
4
5 typedef struct {
6 rfbScreenInfoPtr screen;
7 rfbFontDataPtr font;
8 char** list;
9 int listSize;
10 int selected;
11 int displayStart;
12 int x1,y1,x2,y2,textH,pageH;
13 int xhot,yhot;
14 int buttonWidth,okBX,cancelBX,okX,cancelX,okY;
15 rfbBool okInverted,cancelInverted;
16 int lastButtons;
17 rfbPixel colour,backColour;
18 SelectionChangedHookPtr selChangedHook;
19 enum { SELECTING, OK, CANCEL } state;
20 } rfbSelectData;
21
22 static const char* okStr="OK";
23 static const char* cancelStr="Cancel";
24
selPaintButtons(rfbSelectData * m,rfbBool invertOk,rfbBool invertCancel)25 static void selPaintButtons(rfbSelectData* m,rfbBool invertOk,rfbBool invertCancel)
26 {
27 rfbScreenInfoPtr s = m->screen;
28 rfbPixel bcolour = m->backColour;
29 rfbPixel colour = m->colour;
30
31 rfbFillRect(s,m->x1,m->okY-m->textH,m->x2,m->okY,bcolour);
32
33 if(invertOk) {
34 rfbFillRect(s,m->okBX,m->okY-m->textH,m->okBX+m->buttonWidth,m->okY,colour);
35 rfbDrawStringWithClip(s,m->font,m->okX+m->xhot,m->okY-1+m->yhot,okStr,
36 m->x1,m->okY-m->textH,m->x2,m->okY,
37 bcolour,colour);
38 } else
39 rfbDrawString(s,m->font,m->okX+m->xhot,m->okY-1+m->yhot,okStr,colour);
40
41 if(invertCancel) {
42 rfbFillRect(s,m->cancelBX,m->okY-m->textH,
43 m->cancelBX+m->buttonWidth,m->okY,colour);
44 rfbDrawStringWithClip(s,m->font,m->cancelX+m->xhot,m->okY-1+m->yhot,
45 cancelStr,m->x1,m->okY-m->textH,m->x2,m->okY,
46 bcolour,colour);
47 } else
48 rfbDrawString(s,m->font,m->cancelX+m->xhot,m->okY-1+m->yhot,cancelStr,colour);
49
50 m->okInverted = invertOk;
51 m->cancelInverted = invertCancel;
52 }
53
54 /* line is relative to displayStart */
selPaintLine(rfbSelectData * m,int line,rfbBool invert)55 static void selPaintLine(rfbSelectData* m,int line,rfbBool invert)
56 {
57 int y1 = m->y1+line*m->textH, y2 = y1+m->textH;
58 if(y2>m->y2)
59 y2=m->y2;
60 rfbFillRect(m->screen,m->x1,y1,m->x2,y2,invert?m->colour:m->backColour);
61 if(m->displayStart+line<m->listSize)
62 rfbDrawStringWithClip(m->screen,m->font,m->x1+m->xhot,y2-1+m->yhot,
63 m->list[m->displayStart+line],
64 m->x1,y1,m->x2,y2,
65 invert?m->backColour:m->colour,
66 invert?m->backColour:m->colour);
67 }
68
selSelect(rfbSelectData * m,int _index)69 static void selSelect(rfbSelectData* m,int _index)
70 {
71 int delta;
72
73 if(_index==m->selected || _index<0 || _index>=m->listSize)
74 return;
75
76 if(m->selected>=0)
77 selPaintLine(m,m->selected-m->displayStart,FALSE);
78
79 if(_index<m->displayStart || _index>=m->displayStart+m->pageH) {
80 /* targetLine is the screen line in which the selected line will
81 be displayed.
82 targetLine = m->pageH/2 doesn't look so nice */
83 int targetLine = m->selected-m->displayStart;
84 int lineStart,lineEnd;
85
86 /* scroll */
87 if(_index<targetLine)
88 targetLine = _index;
89 else if(_index+m->pageH-targetLine>=m->listSize)
90 targetLine = _index+m->pageH-m->listSize;
91 delta = _index-(m->displayStart+targetLine);
92
93 if(delta>-m->pageH && delta<m->pageH) {
94 if(delta>0) {
95 lineStart = m->pageH-delta;
96 lineEnd = m->pageH;
97 rfbDoCopyRect(m->screen,m->x1,m->y1,m->x2,m->y1+lineStart*m->textH,
98 0,-delta*m->textH);
99 } else {
100 lineStart = 0;
101 lineEnd = -delta;
102 rfbDoCopyRect(m->screen,
103 m->x1,m->y1+lineEnd*m->textH,m->x2,m->y2,
104 0,-delta*m->textH);
105 }
106 } else {
107 lineStart = 0;
108 lineEnd = m->pageH;
109 }
110 m->displayStart += delta;
111 for(delta=lineStart;delta<lineEnd;delta++)
112 if(delta!=_index)
113 selPaintLine(m,delta,FALSE);
114 }
115
116 m->selected = _index;
117 selPaintLine(m,m->selected-m->displayStart,TRUE);
118
119 if(m->selChangedHook)
120 m->selChangedHook(_index);
121
122 /* todo: scrollbars */
123 }
124
selKbdAddEvent(rfbBool down,rfbKeySym keySym,rfbClientPtr cl)125 static void selKbdAddEvent(rfbBool down,rfbKeySym keySym,rfbClientPtr cl)
126 {
127 if(down) {
128 if(keySym>' ' && keySym<0xff) {
129 int i;
130 rfbSelectData* m = (rfbSelectData*)cl->screen->screenData;
131 char c = tolower(keySym);
132
133 for(i=m->selected+1;m->list[i] && tolower(m->list[i][0])!=c;i++);
134 if(!m->list[i])
135 for(i=0;i<m->selected && tolower(m->list[i][0])!=c;i++);
136 selSelect(m,i);
137 } else if(keySym==XK_Escape) {
138 rfbSelectData* m = (rfbSelectData*)cl->screen->screenData;
139 m->state = CANCEL;
140 } else if(keySym==XK_Return) {
141 rfbSelectData* m = (rfbSelectData*)cl->screen->screenData;
142 m->state = OK;
143 } else {
144 rfbSelectData* m = (rfbSelectData*)cl->screen->screenData;
145 int curSel=m->selected;
146 if(keySym==XK_Up) {
147 if(curSel>0)
148 selSelect(m,curSel-1);
149 } else if(keySym==XK_Down) {
150 if(curSel+1<m->listSize)
151 selSelect(m,curSel+1);
152 } else {
153 if(keySym==XK_Page_Down) {
154 if(curSel+m->pageH<m->listSize)
155 selSelect(m,curSel+m->pageH);
156 else
157 selSelect(m,m->listSize-1);
158 } else if(keySym==XK_Page_Up) {
159 if(curSel-m->pageH>=0)
160 selSelect(m,curSel-m->pageH);
161 else
162 selSelect(m,0);
163 }
164 }
165 }
166 }
167 }
168
selPtrAddEvent(int buttonMask,int x,int y,rfbClientPtr cl)169 static void selPtrAddEvent(int buttonMask,int x,int y,rfbClientPtr cl)
170 {
171 rfbSelectData* m = (rfbSelectData*)cl->screen->screenData;
172 if(y<m->okY && y>=m->okY-m->textH) {
173 if(x>=m->okBX && x<m->okBX+m->buttonWidth) {
174 if(!m->okInverted)
175 selPaintButtons(m,TRUE,FALSE);
176 if(buttonMask)
177 m->state = OK;
178 } else if(x>=m->cancelBX && x<m->cancelBX+m->buttonWidth) {
179 if(!m->cancelInverted)
180 selPaintButtons(m,FALSE,TRUE);
181 if(buttonMask)
182 m->state = CANCEL;
183 } else if(m->okInverted || m->cancelInverted)
184 selPaintButtons(m,FALSE,FALSE);
185 } else {
186 if(m->okInverted || m->cancelInverted)
187 selPaintButtons(m,FALSE,FALSE);
188 if(!m->lastButtons && buttonMask) {
189 if(x>=m->x1 && x<m->x2 && y>=m->y1 && y<m->y2)
190 selSelect(m,m->displayStart+(y-m->y1)/m->textH);
191 }
192 }
193 m->lastButtons = buttonMask;
194
195 /* todo: scrollbars */
196 }
197
selGetCursorPtr(rfbClientPtr cl)198 static rfbCursorPtr selGetCursorPtr(rfbClientPtr cl)
199 {
200 return NULL;
201 }
202
rfbSelectBox(rfbScreenInfoPtr rfbScreen,rfbFontDataPtr font,char ** list,int x1,int y1,int x2,int y2,rfbPixel colour,rfbPixel backColour,int border,SelectionChangedHookPtr selChangedHook)203 int rfbSelectBox(rfbScreenInfoPtr rfbScreen,rfbFontDataPtr font,
204 char** list,
205 int x1,int y1,int x2,int y2,
206 rfbPixel colour,rfbPixel backColour,
207 int border,SelectionChangedHookPtr selChangedHook)
208 {
209 int bpp = rfbScreen->bitsPerPixel/8;
210 char* frameBufferBackup;
211 void* screenDataBackup = rfbScreen->screenData;
212 rfbKbdAddEventProcPtr kbdAddEventBackup = rfbScreen->kbdAddEvent;
213 rfbPtrAddEventProcPtr ptrAddEventBackup = rfbScreen->ptrAddEvent;
214 rfbGetCursorProcPtr getCursorPtrBackup = rfbScreen->getCursorPtr;
215 rfbDisplayHookPtr displayHookBackup = rfbScreen->displayHook;
216 rfbSelectData selData;
217 int i,j,k;
218 int fx1,fy1,fx2,fy2; /* for font bbox */
219
220 if(list==0 || *list==0)
221 return(-1);
222
223 rfbWholeFontBBox(font, &fx1, &fy1, &fx2, &fy2);
224 selData.textH = fy2-fy1;
225 /* I need at least one line for the choice and one for the buttons */
226 if(y2-y1<selData.textH*2+3*border)
227 return(-1);
228 selData.xhot = -fx1;
229 selData.yhot = -fy2;
230 selData.x1 = x1+border;
231 selData.y1 = y1+border;
232 selData.y2 = y2-selData.textH-3*border;
233 selData.x2 = x2-2*border;
234 selData.pageH = (selData.y2-selData.y1)/selData.textH;
235
236 i = rfbWidthOfString(font,okStr);
237 j = rfbWidthOfString(font,cancelStr);
238 selData.buttonWidth= k = 4*border+(i<j)?j:i;
239 selData.okBX = x1+(x2-x1-2*k)/3;
240 if(selData.okBX<x1+border) /* too narrow! */
241 return(-1);
242 selData.cancelBX = x1+k+(x2-x1-2*k)*2/3;
243 selData.okX = selData.okBX+(k-i)/2;
244 selData.cancelX = selData.cancelBX+(k-j)/2;
245 selData.okY = y2-border;
246
247 frameBufferBackup = (char*)malloc(bpp*(x2-x1)*(y2-y1));
248
249 selData.state = SELECTING;
250 selData.screen = rfbScreen;
251 selData.font = font;
252 selData.list = list;
253 selData.colour = colour;
254 selData.backColour = backColour;
255 for(i=0;list[i];i++);
256 selData.selected = i;
257 selData.listSize = i;
258 selData.displayStart = i;
259 selData.lastButtons = 0;
260 selData.selChangedHook = selChangedHook;
261
262 rfbScreen->screenData = &selData;
263 rfbScreen->kbdAddEvent = selKbdAddEvent;
264 rfbScreen->ptrAddEvent = selPtrAddEvent;
265 rfbScreen->getCursorPtr = selGetCursorPtr;
266 rfbScreen->displayHook = NULL;
267
268 /* backup screen */
269 for(j=0;j<y2-y1;j++)
270 memcpy(frameBufferBackup+j*(x2-x1)*bpp,
271 rfbScreen->frameBuffer+j*rfbScreen->paddedWidthInBytes+x1*bpp,
272 (x2-x1)*bpp);
273
274 /* paint list and buttons */
275 rfbFillRect(rfbScreen,x1,y1,x2,y2,colour);
276 selPaintButtons(&selData,FALSE,FALSE);
277 selSelect(&selData,0);
278
279 /* modal loop */
280 while(selData.state == SELECTING)
281 rfbProcessEvents(rfbScreen,20000);
282
283 /* copy back screen data */
284 for(j=0;j<y2-y1;j++)
285 memcpy(rfbScreen->frameBuffer+j*rfbScreen->paddedWidthInBytes+x1*bpp,
286 frameBufferBackup+j*(x2-x1)*bpp,
287 (x2-x1)*bpp);
288 free(frameBufferBackup);
289 rfbMarkRectAsModified(rfbScreen,x1,y1,x2,y2);
290 rfbScreen->screenData = screenDataBackup;
291 rfbScreen->kbdAddEvent = kbdAddEventBackup;
292 rfbScreen->ptrAddEvent = ptrAddEventBackup;
293 rfbScreen->getCursorPtr = getCursorPtrBackup;
294 rfbScreen->displayHook = displayHookBackup;
295
296 if(selData.state==CANCEL)
297 selData.selected=-1;
298 return(selData.selected);
299 }
300
301