bool_t gwinImageOpenGFile(GHandle gh, GFILE *f) {
// is it a valid handle?
if (gh->vmt != (gwinVMT *)&imageVMT)
return FALSE;
if (gdispImageIsOpen(&gw->image))
gdispImageClose(&gw->image);
if ((gdispImageOpenGFile(&gw->image, f) & GDISP_IMAGE_ERR_UNRECOVERABLE))
return FALSE;
_gwinUpdate(gh);
return TRUE;
}
bool_t gwinImageOpenStream(GHandle gh, void *streamPtr) {
if (gdispImageIsOpen(&widget(gh)->image))
gdispImageClose(&widget(gh)->image);
if (!gdispImageSetBaseFileStreamReader(&widget(gh)->image, streamPtr))
return FALSE;
if (gdispImageOpen(&widget(gh)->image) != GDISP_IMAGE_ERR_OK)
return FALSE;
if ((gh->flags & GWIN_FLG_VISIBLE)) {
// Setting the clip here shouldn't be necessary if the redraw doesn't overdraw
// but we put it in for safety anyway
#if GDISP_NEED_CLIP
gdispSetClip(gh->x, gh->y, gh->width, gh->height);
#endif
_redraw(gh);
}
return TRUE;
}
static void ImageRedraw(GHandle gh) {
coord_t x, y, w, h, dx, dy;
color_t bg;
#if GWIN_NEED_IMAGE_ANIMATION
delaytime_t delay;
#endif
// The default display area
dx = 0;
dy = 0;
x = gh->x;
y = gh->y;
w = gh->width;
h = gh->height;
bg = gwinGetDefaultBgColor();
// If the image isn't open just clear the area
if (!gdispImageIsOpen(&gw->image)) {
gdispGFillArea(gh->display, x, y, w, h, bg);
return;
}
// Center horizontally if the area is larger than the image
if (gw->image.width < w) {
w = gw->image.width;
dx = (gh->width-w)/2;
x += dx;
if (dx)
gdispGFillArea(gh->display, gh->x, y, dx, h, bg);
gdispGFillArea(gh->display, x+w, y, gh->width-dx-w, h, bg);
dx = 0;
}
// Center image horizontally if the area is smaller than the image
else if (gw->image.width > w) {
dx = (gw->image.width - w)/2;
}
// Center vertically if the area is larger than the image
if (gw->image.height < h) {
h = gw->image.height;
dy = (gh->height-h)/2;
y += dy;
if (dy)
gdispGFillArea(gh->display, x, gh->y, w, dy, bg);
gdispGFillArea(gh->display, x, y+h, w, gh->height-dy-h, bg);
dy = 0;
}
// Center image vertically if the area is smaller than the image
else if (gw->image.height > h) {
dy = (gw->image.height - h)/2;
}
// Reset the background color in case it has changed
gdispImageSetBgColor(&gw->image, bg);
// Display the image
gdispGImageDraw(gh->display, &gw->image, x, y, w, h, dx, dy);
#if GWIN_NEED_IMAGE_ANIMATION
// read the delay for the next frame
delay = gdispImageNext(&gw->image);
// Wait for that delay if required
switch(delay) {
case TIME_INFINITE:
// Everything is done
break;
case TIME_IMMEDIATE:
// We can't allow a continuous loop here as it would lock the system up so we delay for the minimum period
delay = 1;
// Fall through
default:
// Start the timer to draw the next frame of the animation
gtimerStart(&gw->timer, ImageTimer, (void*)gh, FALSE, delay);
break;
}
#endif
}
static void ImageDestroy(GWindowObject *gh) {
if (gdispImageIsOpen(&gw->image))
gdispImageClose(&gw->image);
}
static void _destroy(GWindowObject *gh) {
if (gdispImageIsOpen(&widget(gh)->image))
gdispImageClose(&widget(gh)->image);
}
void gwinListDefaultDraw(GWidgetObject* gw, void* param) {
const gfxQueueASyncItem* qi;
int i;
coord_t x, y, iheight, iwidth;
color_t fill;
const GColorSet * ps;
#if GWIN_NEED_LIST_IMAGES
coord_t sy;
#endif
#if GDISP_NEED_CONVEX_POLYGON
static const point upArrow[] = { {0, LST_ARROW_SZ}, {LST_ARROW_SZ, LST_ARROW_SZ}, {LST_ARROW_SZ/2, 0} };
static const point downArrow[] = { {0, 0}, {LST_ARROW_SZ, 0}, {LST_ARROW_SZ/2, LST_ARROW_SZ} };
#endif
(void)param;
// is it a valid handle?
if (gw->g.vmt != (gwinVMT *)&listVMT)
return;
// don't render if render has been disabled
if (!(gw->g.flags & GLIST_FLG_ENABLERENDER))
return;
ps = (gw->g.flags & GWIN_FLG_SYSENABLED) ? &gw->pstyle->enabled : &gw->pstyle->disabled;
iheight = gdispGetFontMetric(gw->g.font, fontHeight) + LST_VERT_PAD;
x = 1;
// the scroll area
if (gw->g.flags & GLIST_FLG_SCROLLSMOOTH) {
iwidth = gw->g.width - 2 - 4;
if (gw2obj->cnt > 0) {
int max_scroll_value = gw2obj->cnt * iheight - gw->g.height-2;
if (max_scroll_value > 0) {
int bar_height = (gw->g.height-2) * (gw->g.height-2) / (gw2obj->cnt * iheight);
gdispGFillArea(gw->g.display, gw->g.x + gw->g.width-4, gw->g.y + 1, 2, gw->g.height-1, gw->pstyle->background);
gdispGFillArea(gw->g.display, gw->g.x + gw->g.width-4, gw->g.y + gw2obj->top * ((gw->g.height-2)-bar_height) / max_scroll_value, 2, bar_height, ps->edge);
}
}
} else if ((gw2obj->cnt > (gw->g.height-2) / iheight) || (gw->g.flags & GLIST_FLG_SCROLLALWAYS)) {
iwidth = gw->g.width - (LST_SCROLLWIDTH+3);
gdispGFillArea(gw->g.display, gw->g.x+iwidth+2, gw->g.y+1, LST_SCROLLWIDTH, gw->g.height-2, gdispBlendColor(ps->fill, gw->pstyle->background, 128));
gdispGDrawLine(gw->g.display, gw->g.x+iwidth+1, gw->g.y+1, gw->g.x+iwidth+1, gw->g.y+gw->g.height-2, ps->edge);
#if GDISP_NEED_CONVEX_POLYGON
gdispGFillConvexPoly(gw->g.display, gw->g.x+iwidth+((LST_SCROLLWIDTH-LST_ARROW_SZ)/2+2), gw->g.y+(LST_ARROW_SZ/2+1), upArrow, 3, ps->fill);
gdispGFillConvexPoly(gw->g.display, gw->g.x+iwidth+((LST_SCROLLWIDTH-LST_ARROW_SZ)/2+2), gw->g.y+gw->g.height-(LST_ARROW_SZ+LST_ARROW_SZ/2+1), downArrow, 3, ps->fill);
#else
#warning "GWIN: Lists display better when GDISP_NEED_CONVEX_POLYGON is turned on"
gdispGFillArea(gw->g.display, gw->g.x+iwidth+((LST_SCROLLWIDTH-LST_ARROW_SZ)/2+2), gw->g.y+(LST_ARROW_SZ/2+1), LST_ARROW_SZ, LST_ARROW_SZ, ps->fill);
gdispGFillArea(gw->g.display, gw->g.x+iwidth+((LST_SCROLLWIDTH-LST_ARROW_SZ)/2+2), gw->g.y+gw->g.height-(LST_ARROW_SZ+LST_ARROW_SZ/2+1), LST_ARROW_SZ, LST_ARROW_SZ, ps->fill);
#endif
} else
iwidth = gw->g.width - 2;
#if GWIN_NEED_LIST_IMAGES
if ((gw->g.flags & GLIST_FLG_HASIMAGES)) {
x += iheight;
iwidth -= iheight;
}
#endif
// Find the top item
for (qi = gfxQueueASyncPeek(&gw2obj->list_head), i = iheight - 1; i < gw2obj->top && qi; qi = gfxQueueASyncNext(qi), i+=iheight);
// the list frame
gdispGDrawBox(gw->g.display, gw->g.x, gw->g.y, gw->g.width, gw->g.height, ps->edge);
// Set the clipping region so we do not override the frame.
#if GDISP_NEED_CLIP
gdispGSetClip(gw->g.display, gw->g.x+1, gw->g.y+1, gw->g.width-2, gw->g.height-2);
#endif
// Draw until we run out of room or items
for (y = 1-(gw2obj->top%iheight); y < gw->g.height-2 && qi; qi = gfxQueueASyncNext(qi), y += iheight) {
fill = (qi2li->flags & GLIST_FLG_SELECTED) ? ps->fill : gw->pstyle->background;
gdispGFillArea(gw->g.display, gw->g.x+1, gw->g.y+y, iwidth, iheight, fill);
#if GWIN_NEED_LIST_IMAGES
if ((gw->g.flags & GLIST_FLG_HASIMAGES)) {
// Clear the image area
if (qi2li->pimg && gdispImageIsOpen(qi2li->pimg)) {
// Calculate which image
sy = (qi2li->flags & GLIST_FLG_SELECTED) ? 0 : (iheight-LST_VERT_PAD);
if (!(gw->g.flags & GWIN_FLG_SYSENABLED))
sy += 2*(iheight-LST_VERT_PAD);
while (sy > qi2li->pimg->height)
sy -= iheight-LST_VERT_PAD;
// Draw the image
gdispImageSetBgColor(qi2li->pimg, fill);
gdispGImageDraw(gw->g.display, qi2li->pimg, gw->g.x+1, gw->g.y+y, iheight-LST_VERT_PAD, iheight-LST_VERT_PAD, 0, sy);
}
}
#endif
gdispGFillStringBox(gw->g.display, gw->g.x+x+LST_HORIZ_PAD, gw->g.y+y, iwidth-LST_HORIZ_PAD, iheight, qi2li->text, gw->g.font, ps->text, fill, justifyLeft);
}
// Fill any remaining item space
if (y < gw->g.height-1)
gdispGFillArea(gw->g.display, gw->g.x+1, gw->g.y+y, iwidth, gw->g.height-1-y, gw->pstyle->background);
}