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301 lines
8.7 KiB
301 lines
8.7 KiB
#include <ctype.h>
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#include <rfb/rfb.h>
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#include <rfb/keysym.h>
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typedef struct {
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rfbScreenInfoPtr screen;
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rfbFontDataPtr font;
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char** list;
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int listSize;
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int selected;
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int displayStart;
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int x1,y1,x2,y2,textH,pageH;
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int xhot,yhot;
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int buttonWidth,okBX,cancelBX,okX,cancelX,okY;
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rfbBool okInverted,cancelInverted;
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int lastButtons;
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rfbPixel colour,backColour;
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SelectionChangedHookPtr selChangedHook;
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enum { SELECTING, OK, CANCEL } state;
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} rfbSelectData;
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static const char* okStr="OK";
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static const char* cancelStr="Cancel";
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static void selPaintButtons(rfbSelectData* m,rfbBool invertOk,rfbBool invertCancel)
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{
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rfbScreenInfoPtr s = m->screen;
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rfbPixel bcolour = m->backColour;
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rfbPixel colour = m->colour;
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rfbFillRect(s,m->x1,m->okY-m->textH,m->x2,m->okY,bcolour);
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if(invertOk) {
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rfbFillRect(s,m->okBX,m->okY-m->textH,m->okBX+m->buttonWidth,m->okY,colour);
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rfbDrawStringWithClip(s,m->font,m->okX+m->xhot,m->okY-1+m->yhot,okStr,
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m->x1,m->okY-m->textH,m->x2,m->okY,
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bcolour,colour);
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} else
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rfbDrawString(s,m->font,m->okX+m->xhot,m->okY-1+m->yhot,okStr,colour);
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if(invertCancel) {
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rfbFillRect(s,m->cancelBX,m->okY-m->textH,
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m->cancelBX+m->buttonWidth,m->okY,colour);
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rfbDrawStringWithClip(s,m->font,m->cancelX+m->xhot,m->okY-1+m->yhot,
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cancelStr,m->x1,m->okY-m->textH,m->x2,m->okY,
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bcolour,colour);
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} else
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rfbDrawString(s,m->font,m->cancelX+m->xhot,m->okY-1+m->yhot,cancelStr,colour);
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m->okInverted = invertOk;
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m->cancelInverted = invertCancel;
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}
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/* line is relative to displayStart */
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static void selPaintLine(rfbSelectData* m,int line,rfbBool invert)
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{
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int y1 = m->y1+line*m->textH, y2 = y1+m->textH;
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if(y2>m->y2)
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y2=m->y2;
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rfbFillRect(m->screen,m->x1,y1,m->x2,y2,invert?m->colour:m->backColour);
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if(m->displayStart+line<m->listSize)
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rfbDrawStringWithClip(m->screen,m->font,m->x1+m->xhot,y2-1+m->yhot,
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m->list[m->displayStart+line],
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m->x1,y1,m->x2,y2,
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invert?m->backColour:m->colour,
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invert?m->backColour:m->colour);
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}
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static void selSelect(rfbSelectData* m,int _index)
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{
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int delta;
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if(_index==m->selected || _index<0 || _index>=m->listSize)
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return;
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if(m->selected>=0)
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selPaintLine(m,m->selected-m->displayStart,FALSE);
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if(_index<m->displayStart || _index>=m->displayStart+m->pageH) {
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/* targetLine is the screen line in which the selected line will
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be displayed.
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targetLine = m->pageH/2 doesn't look so nice */
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int targetLine = m->selected-m->displayStart;
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int lineStart,lineEnd;
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/* scroll */
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if(_index<targetLine)
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targetLine = _index;
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else if(_index+m->pageH-targetLine>=m->listSize)
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targetLine = _index+m->pageH-m->listSize;
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delta = _index-(m->displayStart+targetLine);
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if(delta>-m->pageH && delta<m->pageH) {
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if(delta>0) {
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lineStart = m->pageH-delta;
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lineEnd = m->pageH;
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rfbDoCopyRect(m->screen,m->x1,m->y1,m->x2,m->y1+lineStart*m->textH,
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0,-delta*m->textH);
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} else {
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lineStart = 0;
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lineEnd = -delta;
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rfbDoCopyRect(m->screen,
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m->x1,m->y1+lineEnd*m->textH,m->x2,m->y2,
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0,-delta*m->textH);
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}
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} else {
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lineStart = 0;
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lineEnd = m->pageH;
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}
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m->displayStart += delta;
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for(delta=lineStart;delta<lineEnd;delta++)
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if(delta!=_index)
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selPaintLine(m,delta,FALSE);
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}
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m->selected = _index;
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selPaintLine(m,m->selected-m->displayStart,TRUE);
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if(m->selChangedHook)
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m->selChangedHook(_index);
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/* todo: scrollbars */
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}
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static void selKbdAddEvent(rfbBool down,rfbKeySym keySym,rfbClientPtr cl)
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{
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if(down) {
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if(keySym>' ' && keySym<0xff) {
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int i;
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rfbSelectData* m = (rfbSelectData*)cl->screen->screenData;
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char c = tolower(keySym);
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for(i=m->selected+1;m->list[i] && tolower(m->list[i][0])!=c;i++);
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if(!m->list[i])
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for(i=0;i<m->selected && tolower(m->list[i][0])!=c;i++);
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selSelect(m,i);
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} else if(keySym==XK_Escape) {
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rfbSelectData* m = (rfbSelectData*)cl->screen->screenData;
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m->state = CANCEL;
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} else if(keySym==XK_Return) {
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rfbSelectData* m = (rfbSelectData*)cl->screen->screenData;
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m->state = OK;
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} else {
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rfbSelectData* m = (rfbSelectData*)cl->screen->screenData;
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int curSel=m->selected;
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if(keySym==XK_Up) {
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if(curSel>0)
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selSelect(m,curSel-1);
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} else if(keySym==XK_Down) {
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if(curSel+1<m->listSize)
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selSelect(m,curSel+1);
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} else {
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if(keySym==XK_Page_Down) {
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if(curSel+m->pageH<m->listSize)
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selSelect(m,curSel+m->pageH);
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else
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selSelect(m,m->listSize-1);
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} else if(keySym==XK_Page_Up) {
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if(curSel-m->pageH>=0)
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selSelect(m,curSel-m->pageH);
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else
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selSelect(m,0);
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}
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}
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}
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}
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}
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static void selPtrAddEvent(int buttonMask,int x,int y,rfbClientPtr cl)
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{
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rfbSelectData* m = (rfbSelectData*)cl->screen->screenData;
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if(y<m->okY && y>=m->okY-m->textH) {
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if(x>=m->okBX && x<m->okBX+m->buttonWidth) {
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if(!m->okInverted)
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selPaintButtons(m,TRUE,FALSE);
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if(buttonMask)
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m->state = OK;
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} else if(x>=m->cancelBX && x<m->cancelBX+m->buttonWidth) {
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if(!m->cancelInverted)
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selPaintButtons(m,FALSE,TRUE);
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if(buttonMask)
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m->state = CANCEL;
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} else if(m->okInverted || m->cancelInverted)
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selPaintButtons(m,FALSE,FALSE);
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} else {
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if(m->okInverted || m->cancelInverted)
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selPaintButtons(m,FALSE,FALSE);
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if(!m->lastButtons && buttonMask) {
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if(x>=m->x1 && x<m->x2 && y>=m->y1 && y<m->y2)
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selSelect(m,m->displayStart+(y-m->y1)/m->textH);
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}
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}
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m->lastButtons = buttonMask;
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/* todo: scrollbars */
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}
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static rfbCursorPtr selGetCursorPtr(rfbClientPtr cl)
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{
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return NULL;
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}
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int rfbSelectBox(rfbScreenInfoPtr rfbScreen,rfbFontDataPtr font,
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char** list,
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int x1,int y1,int x2,int y2,
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rfbPixel colour,rfbPixel backColour,
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int border,SelectionChangedHookPtr selChangedHook)
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{
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int bpp = rfbScreen->bitsPerPixel/8;
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char* frameBufferBackup;
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void* screenDataBackup = rfbScreen->screenData;
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rfbKbdAddEventProcPtr kbdAddEventBackup = rfbScreen->kbdAddEvent;
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rfbPtrAddEventProcPtr ptrAddEventBackup = rfbScreen->ptrAddEvent;
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rfbGetCursorProcPtr getCursorPtrBackup = rfbScreen->getCursorPtr;
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rfbDisplayHookPtr displayHookBackup = rfbScreen->displayHook;
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rfbSelectData selData;
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int i,j,k;
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int fx1,fy1,fx2,fy2; /* for font bbox */
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if(list==0 || *list==0)
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return(-1);
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rfbWholeFontBBox(font, &fx1, &fy1, &fx2, &fy2);
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selData.textH = fy2-fy1;
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/* I need at least one line for the choice and one for the buttons */
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if(y2-y1<selData.textH*2+3*border)
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return(-1);
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selData.xhot = -fx1;
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selData.yhot = -fy2;
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selData.x1 = x1+border;
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selData.y1 = y1+border;
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selData.y2 = y2-selData.textH-3*border;
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selData.x2 = x2-2*border;
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selData.pageH = (selData.y2-selData.y1)/selData.textH;
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i = rfbWidthOfString(font,okStr);
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j = rfbWidthOfString(font,cancelStr);
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selData.buttonWidth= k = 4*border+(i<j?j:i);
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selData.okBX = x1+(x2-x1-2*k)/3;
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if(selData.okBX<x1+border) /* too narrow! */
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return(-1);
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selData.cancelBX = x1+k+(x2-x1-2*k)*2/3;
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selData.okX = selData.okBX+(k-i)/2;
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selData.cancelX = selData.cancelBX+(k-j)/2;
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selData.okY = y2-border;
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frameBufferBackup = (char*)malloc(bpp*(x2-x1)*(y2-y1));
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selData.state = SELECTING;
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selData.screen = rfbScreen;
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selData.font = font;
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selData.list = list;
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selData.colour = colour;
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selData.backColour = backColour;
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for(i=0;list[i];i++);
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selData.selected = i;
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selData.listSize = i;
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selData.displayStart = i;
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selData.lastButtons = 0;
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selData.selChangedHook = selChangedHook;
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rfbScreen->screenData = &selData;
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rfbScreen->kbdAddEvent = selKbdAddEvent;
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rfbScreen->ptrAddEvent = selPtrAddEvent;
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rfbScreen->getCursorPtr = selGetCursorPtr;
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rfbScreen->displayHook = NULL;
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/* backup screen */
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for(j=0;j<y2-y1;j++)
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memcpy(frameBufferBackup+j*(x2-x1)*bpp,
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rfbScreen->frameBuffer+j*rfbScreen->paddedWidthInBytes+x1*bpp,
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(x2-x1)*bpp);
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/* paint list and buttons */
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rfbFillRect(rfbScreen,x1,y1,x2,y2,colour);
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selPaintButtons(&selData,FALSE,FALSE);
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selSelect(&selData,0);
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/* modal loop */
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while(selData.state == SELECTING)
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rfbProcessEvents(rfbScreen,20000);
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/* copy back screen data */
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for(j=0;j<y2-y1;j++)
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memcpy(rfbScreen->frameBuffer+j*rfbScreen->paddedWidthInBytes+x1*bpp,
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frameBufferBackup+j*(x2-x1)*bpp,
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(x2-x1)*bpp);
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free(frameBufferBackup);
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rfbMarkRectAsModified(rfbScreen,x1,y1,x2,y2);
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rfbScreen->screenData = screenDataBackup;
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rfbScreen->kbdAddEvent = kbdAddEventBackup;
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rfbScreen->ptrAddEvent = ptrAddEventBackup;
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rfbScreen->getCursorPtr = getCursorPtrBackup;
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rfbScreen->displayHook = displayHookBackup;
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if(selData.state==CANCEL)
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selData.selected=-1;
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return(selData.selected);
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}
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