gfx.scrollbuffer_height = scrollbuffer_height;
}
+void InitGfxClipRegion(boolean enabled, int x, int y, int width, int height)
+{
+ gfx.clipping_enabled = enabled;
+ gfx.clip_x = x;
+ gfx.clip_y = y;
+ gfx.clip_width = width;
+ gfx.clip_height = height;
+}
+
void InitGfxDrawBusyAnimFunction(void (*draw_busy_anim_function)(void))
{
gfx.draw_busy_anim_function = draw_busy_anim_function;
gfx.draw_background_mask = draw_background_mask;
}
+#if 0
+
static void DrawBitmapFromTile(Bitmap *bitmap, Bitmap *tile,
int dest_x, int dest_y, int width, int height)
{
}
}
+#else
+
+void SetBackgroundBitmap(Bitmap *background_bitmap_tile, int mask)
+{
+ if (background_bitmap_tile != NULL)
+ gfx.background_bitmap_mask |= mask;
+ else
+ gfx.background_bitmap_mask &= ~mask;
+
+#if 0
+ if (gfx.background_bitmap == NULL)
+ gfx.background_bitmap = CreateBitmap(video.width, video.height,
+ DEFAULT_DEPTH);
+#endif
+
+ if (background_bitmap_tile == NULL) /* empty background requested */
+ return;
+
+ if (mask == REDRAW_ALL)
+ BlitBitmapTiled(background_bitmap_tile, gfx.background_bitmap, 0, 0, 0, 0,
+ 0, 0, video.width, video.height);
+ else if (mask == REDRAW_FIELD)
+ BlitBitmapTiled(background_bitmap_tile, gfx.background_bitmap, 0, 0, 0, 0,
+ gfx.real_sx, gfx.real_sy, gfx.full_sxsize, gfx.full_sysize);
+ else if (mask == REDRAW_DOOR_1)
+ {
+ BlitBitmapTiled(background_bitmap_tile, gfx.background_bitmap, 0, 0, 0, 0,
+ gfx.dx, gfx.dy, gfx.dxsize, gfx.dysize);
+ }
+}
+
+#endif
+
void SetWindowBackgroundBitmap(Bitmap *background_bitmap_tile)
{
/* remove every mask before setting mask for window */
CheckDrawingArea(x, y, 1, 1, gfx.draw_background_mask));
}
-static boolean ValidClippedRectangle(Bitmap *bitmap, int *x, int *y,
- int *width, int *height)
+static boolean InClippedRectangle(Bitmap *bitmap, int *x, int *y,
+ int *width, int *height, boolean is_dest)
{
+#if 1
+ int clip_x, clip_y, clip_width, clip_height;
+
+ if (gfx.clipping_enabled && is_dest) /* only clip destination bitmap */
+ {
+ clip_x = MIN(MAX(0, gfx.clip_x), bitmap->width);
+ clip_y = MIN(MAX(0, gfx.clip_y), bitmap->height);
+ clip_width = MIN(MAX(0, gfx.clip_width), bitmap->width - clip_x);
+ clip_height = MIN(MAX(0, gfx.clip_height), bitmap->height - clip_y);
+ }
+ else
+ {
+ clip_x = 0;
+ clip_y = 0;
+ clip_width = bitmap->width;
+ clip_height = bitmap->height;
+ }
+
+ /* skip if rectangle completely outside bitmap */
+
+ if (*x + *width <= clip_x ||
+ *y + *height <= clip_y ||
+ *x >= clip_x + clip_width ||
+ *y >= clip_y + clip_height)
+ return FALSE;
+
+ /* clip if rectangle overlaps bitmap */
+
+ if (*x < clip_x)
+ {
+ *width -= clip_x - *x;
+ *x = clip_x;
+ }
+ else if (*x + *width > clip_x + clip_width)
+ {
+ *width = clip_x + clip_width - *x;
+ }
+
+ if (*y < clip_y)
+ {
+ *height -= clip_y - *y;
+ *y = clip_y;
+ }
+ else if (*y + *height > clip_y + clip_height)
+ {
+ *height = clip_y + clip_height - *y;
+ }
+
+ return TRUE;
+
+#else
+
/* skip if rectangle completely outside bitmap */
if (*x + *width <= 0 ||
}
return TRUE;
+#endif
}
void BlitBitmap(Bitmap *src_bitmap, Bitmap *dst_bitmap,
return;
#if 1
- if (!ValidClippedRectangle(src_bitmap, &src_x, &src_y, &width, &height) ||
- !ValidClippedRectangle(dst_bitmap, &dst_x, &dst_y, &width, &height))
+ if (!InClippedRectangle(src_bitmap, &src_x, &src_y, &width, &height, FALSE) ||
+ !InClippedRectangle(dst_bitmap, &dst_x, &dst_y, &width, &height, TRUE))
return;
/* source x/y might need adjustment if destination x/y was clipped top/left */
#endif
#endif
+#if 0
+ if (dst_x < gfx.sx + gfx.sxsize)
+ printf("::: %d: BlitBitmap(%d, %d, %d, %d)\n",
+ FrameCounter, dst_x, dst_y, width, height);
+#endif
+
sysCopyArea(src_bitmap, dst_bitmap,
src_x, src_y, width, height, dst_x, dst_y, BLIT_OPAQUE);
}
+void BlitBitmapTiled(Bitmap *src_bitmap, Bitmap *dst_bitmap,
+ int src_x, int src_y, int src_width, int src_height,
+ int dst_x, int dst_y, int dst_width, int dst_height)
+{
+ int src_xsize = (src_width == 0 ? src_bitmap->width : src_width);
+ int src_ysize = (src_height == 0 ? src_bitmap->height : src_height);
+ int dst_xsize = dst_width;
+ int dst_ysize = dst_height;
+ int src_xsteps = (dst_xsize + src_xsize - 1) / src_xsize;
+ int src_ysteps = (dst_ysize + src_ysize - 1) / src_ysize;
+ int x, y;
+
+ for (y = 0; y < src_ysteps; y++)
+ {
+ for (x = 0; x < src_xsteps; x++)
+ {
+ int draw_x = dst_x + x * src_xsize;
+ int draw_y = dst_y + y * src_ysize;
+ int draw_xsize = MIN(src_xsize, dst_xsize - x * src_xsize);
+ int draw_ysize = MIN(src_ysize, dst_ysize - y * src_ysize);
+
+ BlitBitmap(src_bitmap, dst_bitmap, src_x, src_y, draw_xsize, draw_ysize,
+ draw_x, draw_y);
+ }
+ }
+}
+
void FadeRectangle(Bitmap *bitmap_cross, int x, int y, int width, int height,
int fade_mode, int fade_delay, int post_delay,
void (*draw_border_function)(void))
{
#if 1
- /* (use bitmap "backbuffer" -- "bitmap_cross" may be undefined) */
- if (!ValidClippedRectangle(backbuffer, &x, &y, &width, &height))
+ /* (use destination bitmap "backbuffer" -- "bitmap_cross" may be undefined) */
+ if (!InClippedRectangle(backbuffer, &x, &y, &width, &height, TRUE))
return;
#endif
return;
#if 1
- if (!ValidClippedRectangle(bitmap, &x, &y, &width, &height))
+ if (!InClippedRectangle(bitmap, &x, &y, &width, &height, TRUE))
return;
#else
/* skip if rectangle starts outside bitmap */
projects / rocksndiamonds.git / blobdiff