void draw_display_window(display_item *pDI, int undo, BITMAP *pScreen, RECT *pRect)
{
WINDOW *pContents = (WINDOW*) pDI->pContents;
BITMAP *pOldContents = pDI->pOldContents;
RECT tmp_r;
// dirty rectangle.
if (pRect)
{
rect_copy(&tmp_r, pRect);
if (pRect->x == -1)
{
rect_copy(pRect, &pContents->window);
} else {
rect_combine(pRect, &tmp_r, &pContents->window);
}
}
if (undo)
{
// draw it
blit(pOldContents, pScreen, 0, 0, pContents->window.x, pContents->window.y, pContents->window.w, pContents->window.h);
} else {
// save it
if (pDI->is_saving)
{
blit(pScreen, pOldContents, pContents->window.x, pContents->window.y, 0, 0, pContents->window.w, pContents->window.h);
}
// draw it
gui_draw_window(pContents, pScreen);
}
}
void draw_display_bitmap(display_item *pDI, int undo, BITMAP *pScreen, RECT *pRect)
{
BITMAP *pContents = (BITMAP*) pDI->pContents;
BITMAP *pOldContents = pDI->pOldContents;
BITMAP *p = (BITMAP*) (undo?pOldContents:pContents);
RECT r = {pDI->x, pDI->y, undo?p->w:pDI->is_scaled?pDI->w:p->w, undo?p->h:pDI->is_scaled?pDI->h:p->h};
RECT tmp_r;
// dirty rectangle.
if (pRect)
{
rect_copy(&tmp_r, pRect);
if (pRect->x == -1)
{
rect_copy(pRect, &r);
} else {
rect_combine(pRect, &tmp_r, &r);
}
}
if (undo)
{
// draw it
if (pDI->is_saving)
blit(pOldContents, pScreen, 0, 0, pDI->x, pDI->y, pOldContents->w, pOldContents->h);
} else {
// draw it.
if (pDI->is_scaled)
{
if (pDI->is_saving)
blit(pScreen, pOldContents, pDI->x, pDI->y, 0, 0, pDI->w, pDI->h);
if (pDI->is_sprite)
{
stretch_sprite((BITMAP*) pContents, pScreen, pDI->x, pDI->y, pDI->w, pDI->h);
} else {
stretch_blit((BITMAP*) pContents, pScreen, 0, 0, pContents->w, pContents->h, pDI->x, pDI->y, pDI->w, pDI->h);
}
} else {
if (pDI->is_saving)
blit(pScreen, pOldContents, pDI->x, pDI->y, 0, 0, pContents->w, pContents->h);
if (pDI->is_sprite)
{
draw_sprite(pScreen, pContents, pDI->x, pDI->y);
} else
if (pDI->is_translucent)
{
pDI->pParent->display_prev_table = color_map;
color_map = pDI->type==DISPLAY_LIGHT?pDI->pParent->display_light_table:pDI->pParent->display_trans_table;
draw_trans_sprite(pScreen, pContents, pDI->x, pDI->y);
color_map = pDI->pParent->display_prev_table;
} else {
blit(pContents, pScreen, 0, 0, pDI->x, pDI->y, pContents->w, pContents->h);
}
}
}
}
void dirty_addrect(struct rect *rt) {
if (rt == NULL) {
_dirty_rects[0].left = 0;
_dirty_rects[0].top = 0;
_dirty_rects[0].right = SCREEN_WIDTH;
_dirty_rects[0].bottom = SCREEN_HEIGHT;
_rect_count = 1;
return;
}
if (_rect_count==0) {
_dirty_rects[_rect_count] = *rt;
++_rect_count;
} else {
int i;
struct rect comb;
int area1, area2, areac, areaBest;
int bestidx = -1;
if (_rect_count>=MAX_DIRTY-1) {
dirty_addrect(NULL);
return;
}
for (i=0; i<_rect_count; ++i) {
if (rect_contains(&_dirty_rects[i], rt)) return;
}
for (i=0; i<_rect_count; ++i) {
comb = rect_combine(&_dirty_rects[i], rt);
area1 = rect_calc_area(&_dirty_rects[i]);
area2 = rect_calc_area(rt);
areac = rect_calc_area(&comb);
if (areac < area1 + area2) {
if (bestidx < 0 || area1 + area2 - areac > areaBest) {
areaBest = area1 + area2 - areac;
bestidx = i;
}
}
}
if (bestidx >= 0)
_dirty_rects[bestidx] = rect_combine(&_dirty_rects[bestidx], rt);
else
_dirty_rects[_rect_count++] = *rt;
}
}
