Some window buffer switching

2 files changed, 46 insertions, 30 deletions

diff --git a/libgui/gui.c b/libgui/gui.c
index 3b918e7..cfc33b3 100644
--- a/libgui/gui.c
+++ b/libgui/gui.c
@@ -40,51 +40,65 @@ void gui_write(struct vbe *vbe, int x, int y, const u32 c[3], char *text)
 	}
 }
 
-void gui_load_wallpaper(struct vbe *vbe, char *path)
+void gui_load_image(struct window *win, char *path, int x, int y)
 {
 	struct bmp *bmp = bmp_load(path);
-	assert(bmp);
+	assert(bmp && bmp->width + x <= win->width);
+	assert(bmp && bmp->height + y <= win->height);
 
+	// TODO: Support padding with odd widths
+	u8 *srcfb = bmp->data;
+	u8 *destfb = win->fb;
 	int bpl = bmp->bpp >> 3;
-	int x1 = 0;
-	int x2 = bmp->width;
-	int y1 = 0;
-	int y2 = bmp->height;
+	for (u32 cy = 0; cy <= bmp->height; cy++) {
+		for (u32 cx = 0; cx <= bmp->width; cx++) {
+			destfb[bpl * cx + 0] = srcfb[bpl * cx + 0];
+			destfb[bpl * cx + 1] = srcfb[bpl * cx + 1];
+			destfb[bpl * cx + 2] = srcfb[bpl * cx + 2];
+		}
+		srcfb += bmp->pitch;
+		destfb += win->pitch;
+	}
+}
 
-	// TODO: Support padding with odd widths
-	/* int pitch = bmp->width * bpl; */
-	/* int padding = 1; */
-	/* while ((pitch + padding) % 4 != 0) */
-	/* 	padding++; */
-	/* int psw = pitch + padding; */
+void gui_load_wallpaper(struct window *win, char *path)
+{
+	gui_load_image(win, path, 0, 0);
+}
 
-	int pos1 = x1 * bpl + y1 * vbe->pitch;
-	u8 *draw = &vbe->fb[pos1];
-	u8 *data = bmp->data;
-	for (int i = 0; i <= y2 - y1; i++) {
-		for (int j = 0; j <= x2 - x1; j++) {
-			draw[bpl * j] = data[bpl * j];
-			draw[bpl * j + 1] = data[bpl * j + 1];
-			draw[bpl * j + 2] = data[bpl * j + 2];
+void gui_win_on_win(struct window *src, struct window *dest, int x, int y)
+{
+	// TODO: x, y image coords
+	(void)x;
+	(void)y;
+
+	u8 *srcfb = src->fb;
+	u8 *destfb = dest->fb;
+	int bpl = dest->bpp >> 3;
+	for (u32 cy = 0; cy <= src->height; cy++) {
+		for (u32 cx = 0; cx <= src->width; cx++) {
+			destfb[bpl * cx + 0] = srcfb[bpl * cx + 0];
+			destfb[bpl * cx + 1] = srcfb[bpl * cx + 1];
+			destfb[bpl * cx + 2] = srcfb[bpl * cx + 2];
 		}
-		draw += vbe->pitch;
-		data += bmp->pitch;
+		srcfb += src->pitch;
+		destfb += dest->pitch;
 	}
 }
 
 void gui_draw_rectangle(struct window *win, int x1, int y1, int x2, int y2, const u32 color[3])
 {
-	int bpl = win->vbe->bpp >> 3;
+	int bpl = win->bpp >> 3;
 
-	int pos1 = x1 * bpl + y1 * win->vbe->pitch;
+	int pos1 = x1 * bpl + y1 * win->pitch;
 	u8 *draw = &win->fb[pos1];
 	for (int i = 0; i <= y2 - y1; i++) {
 		for (int j = 0; j <= x2 - x1; j++) {
-			draw[bpl * j] = color[2];
+			draw[bpl * j + 0] = color[2];
 			draw[bpl * j + 1] = color[1];
 			draw[bpl * j + 2] = color[0];
 		}
-		draw += win->vbe->pitch;
+		draw += win->pitch;
 	}
 }
 
diff --git a/libgui/inc/gui.h b/libgui/inc/gui.h
index 467496a..ccd4bd9 100644
--- a/libgui/inc/gui.h
+++ b/libgui/inc/gui.h
@@ -19,15 +19,17 @@ struct font {
 struct window {
 	int x;
 	int y;
-	u16 width;
-	u16 height;
-	struct vbe *vbe;
+	u32 width;
+	u32 height;
 	u8 *fb;
+	u32 bpp;
+	u32 pitch;
 };
 
+void gui_load_wallpaper(struct window *win, char *path);
+void gui_win_on_win(struct window *src, struct window *dest, int x, int y);
 void gui_draw_rectangle(struct window *win, int x1, int y1, int x2, int y2, const u32 color[3]);
 void gui_fill(struct window *win, const u32 color[3]);
-void gui_load_wallpaper(struct vbe *vbe, char *path);
 void gui_init(char *font_path);
 
 /**