diff --git a/demos/demo2_app.c b/demos/demo2_app.c
index 892e45551..eee465b9b 100644
--- a/demos/demo2_app.c
+++ b/demos/demo2_app.c
@@ -44,7 +44,7 @@ static ret_t on_paint_9patch(void* ctx, event_t* e) {
   return RET_OK;
 }
 
-static ret_t on_paint_scale(void* ctx, event_t* e) {
+static ret_t on_paint_default(void* ctx, event_t* e) {
   rect_t s;
   rect_t r;
   bitmap_t img;
@@ -74,7 +74,7 @@ static ret_t on_paint_line(void* ctx, event_t* e) {
   canvas_t* c = evt->c;
   canvas_set_fill_color(c, fill_color);
   canvas_set_stroke_color(c, stroke_color);
-  
+
   canvas_set_stroke_color(c, stroke_color);
   canvas_draw_line(c, 10, 10, 100, 300);
 
@@ -90,10 +90,10 @@ static ret_t on_paint_3patch_h(void* ctx, event_t* e) {
 
   rect_init(r, 10, 10, 100, 60);
   canvas_draw_image_3patch_h(c, &img, &r);
-  
+
   rect_init(r, 10, 80, 10, 60);
   canvas_draw_image_3patch_h(c, &img, &r);
-  
+
   rect_init(r, 10, 160, 300, 50);
   canvas_draw_image_3patch_h(c, &img, &r);
 
@@ -112,14 +112,14 @@ static ret_t on_paint_3patch_v(void* ctx, event_t* e) {
 
   rect_init(r, 10, 10, 60, 100);
   canvas_draw_image_3patch_h(c, &img, &r);
-  
+
   rect_init(r, 80, 10, 60, 10);
   canvas_draw_image_3patch_h(c, &img, &r);
-  
+
   rect_init(r, 160, 10, 50, 300);
   canvas_draw_image_3patch_h(c, &img, &r);
 
-  rect_init(r, 220,  10, 20, 300);
+  rect_init(r, 220, 10, 20, 300);
   canvas_draw_image_3patch_h(c, &img, &r);
 
   return RET_OK;
@@ -134,11 +134,11 @@ static ret_t on_paint_tile_h(void* ctx, event_t* e) {
 
   rect_init(r, 10, 10, 10, img.h);
   canvas_draw_image_tile_h(c, &img, &r);
-  
+
   rect_init(r, 10, 60, img.w, img.h);
   canvas_draw_image_tile_h(c, &img, &r);
-  
-  rect_init(r, 10, 160, img.w*2, img.h*2);
+
+  rect_init(r, 10, 160, img.w * 2, img.h * 2);
   canvas_draw_image_tile_h(c, &img, &r);
 
   return RET_OK;
@@ -156,8 +156,8 @@ static ret_t on_paint_tile_v(void* ctx, event_t* e) {
 
   rect_init(r, 90, 10, img.w, img.h);
   canvas_draw_image_tile_v(c, &img, &r);
-  
-  rect_init(r, 160, 10, img.w*2, img.h*2);
+
+  rect_init(r, 160, 10, img.w * 2, img.h * 2);
   canvas_draw_image_tile_v(c, &img, &r);
 
   return RET_OK;
@@ -170,23 +170,99 @@ static ret_t on_paint_tile(void* ctx, event_t* e) {
   canvas_t* c = evt->c;
   image_manager_load(default_im(), "btn_blue_n", &img);
 
-  rect_init(r, 10, 10, img.w/2, img.h/2);
+  rect_init(r, 10, 10, img.w / 2, img.h / 2);
   canvas_draw_image_tile(c, &img, &r);
 
   rect_init(r, 50, 50, img.w, img.h);
   canvas_draw_image_tile(c, &img, &r);
-  
-  rect_init(r, 100, 100, img.w*2+10, img.h*2+10);
+
+  rect_init(r, 100, 100, img.w * 2 + 10, img.h * 2 + 10);
   canvas_draw_image_tile(c, &img, &r);
 
   return RET_OK;
 }
 
+static ret_t on_paint_scale_x(void* ctx, event_t* e) {
+  rect_t r;
+  bitmap_t img;
+  paint_event_t* evt = (paint_event_t*)e;
+  canvas_t* c = evt->c;
+  image_manager_load(default_im(), "btn_blue_n", &img);
+
+  rect_init(r, 10, 10, img.w, img.h / 2);
+  canvas_draw_image_scale_x(c, &img, &r);
+
+  rect_init(r, 50, 50, img.w, img.h);
+  canvas_draw_image_scale_x(c, &img, &r);
+
+  rect_init(r, 100, 100, img.w * 2, img.h);
+  canvas_draw_image_scale_x(c, &img, &r);
+
+  return RET_OK;
+}
+
+static ret_t on_paint_scale_y(void* ctx, event_t* e) {
+  rect_t r;
+  bitmap_t img;
+  paint_event_t* evt = (paint_event_t*)e;
+  canvas_t* c = evt->c;
+  image_manager_load(default_im(), "btn_blue_n", &img);
+
+  rect_init(r, 10, 10, img.w / 2, img.h);
+  canvas_draw_image_scale_y(c, &img, &r);
+
+  rect_init(r, 50, 50, img.w, img.h);
+  canvas_draw_image_scale_y(c, &img, &r);
+
+  rect_init(r, 100, 100, img.w, img.h * 2);
+  canvas_draw_image_scale_y(c, &img, &r);
+
+  return RET_OK;
+}
+
+static ret_t on_paint_scale(void* ctx, event_t* e) {
+  rect_t r;
+  bitmap_t img;
+  paint_event_t* evt = (paint_event_t*)e;
+  canvas_t* c = evt->c;
+  image_manager_load(default_im(), "btn_blue_n", &img);
+
+  rect_init(r, 10, 10, img.w / 2, img.h);
+  canvas_draw_image_scale(c, &img, &r);
+
+  rect_init(r, 50, 50, img.w, img.h);
+  canvas_draw_image_scale(c, &img, &r);
+
+  rect_init(r, 100, 100, img.w, img.h * 2);
+  canvas_draw_image_scale(c, &img, &r);
+
+  return RET_OK;
+}
+
+static ret_t on_paint_center(void* ctx, event_t* e) {
+  rect_t r;
+  bitmap_t img;
+  paint_event_t* evt = (paint_event_t*)e;
+  canvas_t* c = evt->c;
+  image_manager_load(default_im(), "btn_blue_n", &img);
+
+  rect_init(r, 10, 10, img.w / 2, img.h);
+  canvas_draw_image_center(c, &img, &r);
+
+  rect_init(r, 50, 50, img.w, img.h);
+  canvas_draw_image_center(c, &img, &r);
+
+  rect_init(r, 100, 100, img.w, img.h * 2);
+  canvas_draw_image_center(c, &img, &r);
+
+  return RET_OK;
+}
+
 ret_t application_init() {
   widget_t* win = window_create(NULL, 0, 0, 0, 0);
   widget_t* canvas = group_box_create(win, 0, 0, win->w, win->h);
 
-  widget_on(canvas, EVT_PAINT, on_paint_tile, NULL);
+  widget_on(canvas, EVT_PAINT, on_paint_center, NULL);
 
   return RET_OK;
 }
diff --git a/src/base/canvas.c b/src/base/canvas.c
index 771ba7af4..3a7ce9729 100644
--- a/src/base/canvas.c
+++ b/src/base/canvas.c
@@ -513,15 +513,15 @@ ret_t canvas_draw_image_tile(canvas_t* c, bitmap_t* img, rect_t* dst) {
 
   d = *dst;
 
-  while(y < dst->h) {
-    h = ftk_min(img->h, dst->h-y);
-    while(x < dst->w) {
-      w = ftk_min(img->w, dst->w-x);
+  while (y < dst->h) {
+    h = ftk_min(img->h, dst->h - y);
+    while (x < dst->w) {
+      w = ftk_min(img->w, dst->w - x);
       s.w = w;
       s.h = h;
 
-      d.x = x+dst->x;
-      d.y = y+dst->y;
+      d.x = x + dst->x;
+      d.y = y + dst->y;
       d.w = w;
       d.h = h;
       canvas_draw_image(c, img, &s, &d);
@@ -548,8 +548,8 @@ ret_t canvas_draw_image_tile_h(canvas_t* c, bitmap_t* img, rect_t* dst) {
 
   d = *dst;
 
-  while(x < dst->w) {
-    w = ftk_min(img->w, dst->w-x);
+  while (x < dst->w) {
+    w = ftk_min(img->w, dst->w - x);
     s.w = w;
     d.x = x;
     d.w = w;
@@ -574,8 +574,8 @@ ret_t canvas_draw_image_tile_v(canvas_t* c, bitmap_t* img, rect_t* dst) {
 
   d = *dst;
 
-  while(y < dst->h) {
-    h = ftk_min(img->h, dst->h-y);
+  while (y < dst->h) {
+    h = ftk_min(img->h, dst->h - y);
     s.h = h;
     d.y = y;
     d.h = h;
@@ -605,7 +605,7 @@ ret_t canvas_draw_image_3patch_v(canvas_t* c, bitmap_t* img, rect_t* dst) {
 
   canvas_translate(c, dst->x, dst->y);
 
-  if(dst_h <= img_h) {
+  if (dst_h <= img_h) {
     rect_init(s, 0, 0, img_w, img_h);
     rect_init(d, 0, 0, dst_w, dst_h);
     canvas_draw_image(c, img, &s, &d);
@@ -628,8 +628,8 @@ ret_t canvas_draw_image_3patch_v(canvas_t* c, bitmap_t* img, rect_t* dst) {
   canvas_draw_image(c, img, &s, &d);
 
   /*bottom*/
-  rect_init(s, 0, img_h-h, img_w, h);
-  rect_init(d, 0, dst_h-h, dst_w, h);
+  rect_init(s, 0, img_h - h, img_w, h);
+  rect_init(d, 0, dst_h - h, dst_w, h);
   canvas_draw_image(c, img, &s, &d);
 
   canvas_untranslate(c, dst->x, dst->y);
@@ -656,7 +656,7 @@ ret_t canvas_draw_image_3patch_h(canvas_t* c, bitmap_t* img, rect_t* dst) {
 
   canvas_translate(c, dst->x, dst->y);
 
-  if(dst_w <= img_w) {
+  if (dst_w <= img_w) {
     rect_init(s, 0, 0, img_w, img_h);
     rect_init(d, 0, 0, dst_w, dst_h);
     canvas_draw_image(c, img, &s, &d);
@@ -674,13 +674,13 @@ ret_t canvas_draw_image_3patch_h(canvas_t* c, bitmap_t* img, rect_t* dst) {
   canvas_draw_image(c, img, &s, &d);
 
   /*center*/
-  rect_init(s, w, 0, img_w-2*w, img_h);
+  rect_init(s, w, 0, img_w - 2 * w, img_h);
   rect_init(d, w, 0, w_w, dst_h);
   canvas_draw_image(c, img, &s, &d);
 
   /*right*/
-  rect_init(s, img_w-w, 0, w, img_h);
-  rect_init(d, dst_w-w, 0, w, dst_h);
+  rect_init(s, img_w - w, 0, w, img_h);
+  rect_init(d, dst_w - w, 0, w, dst_h);
   canvas_draw_image(c, img, &s, &d);
 
   canvas_untranslate(c, dst->x, dst->y);
@@ -808,3 +808,94 @@ ret_t canvas_test_paint(canvas_t* c, bool_t pressed, xy_t x, xy_t y) {
 
   return RET_OK;
 }
+
+ret_t canvas_draw_image_scale_x(canvas_t* c, bitmap_t* img, rect_t* dst) {
+  rect_t s;
+  rect_t d;
+  wh_t src_h = 0;
+  wh_t dst_h = 0;
+  float scale = 0;
+  return_value_if_fail(c != NULL && img != NULL && dst != NULL, RET_BAD_PARAMS);
+
+  scale = (float)(dst->w) / img->w;
+  dst_h = ftk_min(img->h * scale, dst->h);
+  src_h = ftk_min(img->h, dst_h / scale);
+
+  s.x = 0;
+  s.y = 0;
+  s.w = img->w;
+  s.h = src_h;
+
+  d = *dst;
+  d.h = dst_h;
+
+  return canvas_draw_image(c, img, &s, &d);
+}
+
+ret_t canvas_draw_image_scale_y(canvas_t* c, bitmap_t* img, rect_t* dst) {
+  rect_t s;
+  rect_t d;
+  wh_t src_w = 0;
+  wh_t dst_w = 0;
+  float scale = 0;
+  return_value_if_fail(c != NULL && img != NULL && dst != NULL, RET_BAD_PARAMS);
+
+  scale = (float)(dst->h) / img->h;
+  dst_w = ftk_min(img->w * scale, dst->w);
+  src_w = ftk_min(img->w, dst_w / scale);
+
+  s.x = 0;
+  s.y = 0;
+  s.h = img->h;
+  s.w = src_w;
+
+  d = *dst;
+  d.w = dst_w;
+
+  return canvas_draw_image(c, img, &s, &d);
+}
+
+ret_t canvas_draw_image_scale(canvas_t* c, bitmap_t* img, rect_t* dst) {
+  rect_t s;
+  rect_t d;
+  wh_t dst_w = 0;
+  float scale = 0;
+  float scalex = 0;
+  float scaley = 0;
+  return_value_if_fail(c != NULL && img != NULL && dst != NULL, RET_BAD_PARAMS);
+
+  s.x = 0;
+  s.y = 0;
+  s.h = img->h;
+  s.w = img->w;
+
+  scalex = (float)(dst->w) / img->w;
+  scaley = (float)(dst->h) / img->h;
+  scale = ftk_min(scalex, scaley);
+
+  d.w = img->w * scale;
+  d.h = img->h * scale;
+  d.x = dst->x + ((dst->w - d.w) >> 1);
+  d.y = dst->y + ((dst->h - d.h) >> 1);
+
+  return canvas_draw_image(c, img, &s, &d);
+}
+
+ret_t canvas_draw_image_center(canvas_t* c, bitmap_t* img, rect_t* dst) {
+  rect_t s;
+  rect_t d;
+  return_value_if_fail(c != NULL && img != NULL && dst != NULL, RET_BAD_PARAMS);
+
+  s.x = 0;
+  s.y = 0;
+  s.h = img->h;
+  s.w = img->w;
+
+  d = *dst;
+  d.x = dst->x + ((dst->w - s.w) >> 1);
+  d.y = dst->y + ((dst->h - s.h) >> 1);
+  d.w = s.w;
+  d.h = s.h;
+
+  return canvas_draw_image(c, img, &s, &d);
+}
diff --git a/src/base/canvas.h b/src/base/canvas.h
index a42321b01..cbde799ad 100644
--- a/src/base/canvas.h
+++ b/src/base/canvas.h
@@ -75,14 +75,19 @@ ret_t canvas_stroke_rect(canvas_t* c, xy_t x, xy_t y, wh_t w, wh_t h);
 ret_t canvas_draw_char(canvas_t* c, wchar_t chr, xy_t x, xy_t y);
 ret_t canvas_draw_text(canvas_t* c, wchar_t* str, int32_t nr, xy_t x, xy_t y);
 ret_t canvas_draw_image(canvas_t* c, bitmap_t* img, rect_t* src, rect_t* dst);
+
 ret_t canvas_draw_image_at(canvas_t* c, bitmap_t* img, xy_t x, xy_t y);
+
+ret_t canvas_draw_image_center(canvas_t* c, bitmap_t* img, rect_t* dst);
 ret_t canvas_draw_image_3patch_h(canvas_t* c, bitmap_t* img, rect_t* dst);
 ret_t canvas_draw_image_3patch_v(canvas_t* c, bitmap_t* img, rect_t* dst);
+ret_t canvas_draw_image_9patch(canvas_t* c, bitmap_t* img, rect_t* dst);
 ret_t canvas_draw_image_tile(canvas_t* c, bitmap_t* img, rect_t* dst);
 ret_t canvas_draw_image_tile_h(canvas_t* c, bitmap_t* img, rect_t* dst);
 ret_t canvas_draw_image_tile_v(canvas_t* c, bitmap_t* img, rect_t* dst);
-
-ret_t canvas_draw_image_9patch(canvas_t* c, bitmap_t* img, rect_t* dst);
+ret_t canvas_draw_image_scale(canvas_t* c, bitmap_t* img, rect_t* dst);
+ret_t canvas_draw_image_scale_x(canvas_t* c, bitmap_t* img, rect_t* dst);
+ret_t canvas_draw_image_scale_y(canvas_t* c, bitmap_t* img, rect_t* dst);
 
 ret_t canvas_test_paint(canvas_t* c, bool_t pressed, xy_t x, xy_t y);
 
diff --git a/src/base/types_def.h b/src/base/types_def.h
index d9b98bfec..9e089882a 100644
--- a/src/base/types_def.h
+++ b/src/base/types_def.h
@@ -29,9 +29,8 @@
 #include <stdlib.h>
 #include <string.h>
 
-typedef int xy_t;
-typedef uint32_t id_t;
-typedef uint32_t wh_t;
+typedef int32_t xy_t;
+typedef int32_t wh_t;
 
 /**
  * @enum ret_t
diff --git a/tests/canvas_test.cc b/tests/canvas_test.cc
index b4aeadd54..c8091fad1 100644
--- a/tests/canvas_test.cc
+++ b/tests/canvas_test.cc
@@ -362,16 +362,18 @@ TEST(Canvas, draw_image_3patch_h) {
   rect_init(d, 0, 0, img.w, img.h);
   ASSERT_EQ(canvas_draw_image_3patch_h(&c, &img, &d), RET_OK);
   ASSERT_EQ(lcd_log_get_commands(lcd), "dg(0,0,32,32,0,0,32,32);");
-  
+
   lcd_log_reset(lcd);
   rect_init(d, 0, 0, img.w * 3, img.h * 2);
   ASSERT_EQ(canvas_draw_image_3patch_h(&c, &img, &d), RET_OK);
-  ASSERT_EQ(lcd_log_get_commands(lcd), "dg(0,0,10,32,0,0,10,64);dg(10,0,12,32,10,0,76,64);dg(22,0,10,32,86,0,10,64);");
+  ASSERT_EQ(lcd_log_get_commands(lcd),
+            "dg(0,0,10,32,0,0,10,64);dg(10,0,12,32,10,0,76,64);dg(22,0,10,32,86,0,10,64);");
 
   lcd_log_reset(lcd);
-  rect_init(d, 0, 0, img.w * 3, img.h/2);
+  rect_init(d, 0, 0, img.w * 3, img.h / 2);
   ASSERT_EQ(canvas_draw_image_3patch_h(&c, &img, &d), RET_OK);
-  ASSERT_EQ(lcd_log_get_commands(lcd), "dg(0,0,10,32,0,0,10,16);dg(10,0,12,32,10,0,76,16);dg(22,0,10,32,86,0,10,16);");
+  ASSERT_EQ(lcd_log_get_commands(lcd),
+            "dg(0,0,10,32,0,0,10,16);dg(10,0,12,32,10,0,76,16);dg(22,0,10,32,86,0,10,16);");
 
   canvas_end_frame(&c);
   font_manager_deinit(&font_manager);
@@ -397,16 +399,18 @@ TEST(Canvas, draw_image_3patch_v) {
   rect_init(d, 0, 0, img.w, img.h);
   ASSERT_EQ(canvas_draw_image_3patch_v(&c, &img, &d), RET_OK);
   ASSERT_EQ(lcd_log_get_commands(lcd), "dg(0,0,32,32,0,0,32,32);");
-  
+
   lcd_log_reset(lcd);
   rect_init(d, 0, 0, img.w * 2, img.h * 3);
   ASSERT_EQ(canvas_draw_image_3patch_v(&c, &img, &d), RET_OK);
-  ASSERT_EQ(lcd_log_get_commands(lcd), "dg(0,0,32,10,0,0,64,10);dg(0,10,32,12,0,10,64,76);dg(0,22,32,10,0,86,64,10);");
+  ASSERT_EQ(lcd_log_get_commands(lcd),
+            "dg(0,0,32,10,0,0,64,10);dg(0,10,32,12,0,10,64,76);dg(0,22,32,10,0,86,64,10);");
 
   lcd_log_reset(lcd);
-  rect_init(d, 0, 0, img.w/2, img.h * 3);
+  rect_init(d, 0, 0, img.w / 2, img.h * 3);
   ASSERT_EQ(canvas_draw_image_3patch_v(&c, &img, &d), RET_OK);
-  ASSERT_EQ(lcd_log_get_commands(lcd), "dg(0,0,32,10,0,0,16,10);dg(0,10,32,12,0,10,16,76);dg(0,22,32,10,0,86,16,10);");
+  ASSERT_EQ(lcd_log_get_commands(lcd),
+            "dg(0,0,32,10,0,0,16,10);dg(0,10,32,12,0,10,16,76);dg(0,22,32,10,0,86,16,10);");
 
   canvas_end_frame(&c);
   font_manager_deinit(&font_manager);
@@ -431,17 +435,26 @@ TEST(Canvas, draw_image_9patch) {
   lcd_log_reset(lcd);
   rect_init(d, 0, 0, img.w, img.h);
   ASSERT_EQ(canvas_draw_image_9patch(&c, &img, &d), RET_OK);
-  ASSERT_EQ(lcd_log_get_commands(lcd), "dg(0,0,10,10,0,0,10,10);dg(22,0,10,10,22,0,10,10);dg(0,22,10,10,0,22,10,10);dg(22,22,10,10,22,22,10,10);dg(10,0,12,10,10,0,12,10);dg(10,22,12,10,10,22,12,10);dg(0,10,10,12,0,10,10,12);dg(22,10,10,12,22,10,10,12);dg(10,10,12,12,10,10,12,12);");
-  
+  ASSERT_EQ(lcd_log_get_commands(lcd),
+            "dg(0,0,10,10,0,0,10,10);dg(22,0,10,10,22,0,10,10);dg(0,22,10,10,0,22,10,10);dg(22,22,"
+            "10,10,22,22,10,10);dg(10,0,12,10,10,0,12,10);dg(10,22,12,10,10,22,12,10);dg(0,10,10,"
+            "12,0,10,10,12);dg(22,10,10,12,22,10,10,12);dg(10,10,12,12,10,10,12,12);");
+
   lcd_log_reset(lcd);
   rect_init(d, 0, 0, img.w * 2, img.h * 3);
   ASSERT_EQ(canvas_draw_image_9patch(&c, &img, &d), RET_OK);
-  ASSERT_EQ(lcd_log_get_commands(lcd), "dg(0,0,10,10,0,0,10,10);dg(22,0,10,10,54,0,10,10);dg(0,22,10,10,0,86,10,10);dg(22,22,10,10,54,86,10,10);dg(10,0,12,10,10,0,44,10);dg(10,22,12,10,10,86,44,10);dg(0,10,10,12,0,10,10,76);dg(22,10,10,12,54,10,10,76);dg(10,10,12,12,10,10,44,76);");
+  ASSERT_EQ(lcd_log_get_commands(lcd),
+            "dg(0,0,10,10,0,0,10,10);dg(22,0,10,10,54,0,10,10);dg(0,22,10,10,0,86,10,10);dg(22,22,"
+            "10,10,54,86,10,10);dg(10,0,12,10,10,0,44,10);dg(10,22,12,10,10,86,44,10);dg(0,10,10,"
+            "12,0,10,10,76);dg(22,10,10,12,54,10,10,76);dg(10,10,12,12,10,10,44,76);");
 
   lcd_log_reset(lcd);
-  rect_init(d, 0, 0, img.w/2, img.h * 3);
+  rect_init(d, 0, 0, img.w / 2, img.h * 3);
   ASSERT_EQ(canvas_draw_image_9patch(&c, &img, &d), RET_OK);
-  ASSERT_EQ(lcd_log_get_commands(lcd), "dg(0,0,5,10,0,0,5,10);dg(27,0,5,10,11,0,5,10);dg(0,22,5,10,0,86,5,10);dg(27,22,5,10,11,86,5,10);dg(5,0,22,10,5,0,6,10);dg(5,22,22,10,5,86,6,10);dg(0,10,5,12,0,10,5,76);dg(27,10,5,12,11,10,5,76);dg(5,10,22,12,5,10,6,76);");
+  ASSERT_EQ(lcd_log_get_commands(lcd),
+            "dg(0,0,5,10,0,0,5,10);dg(27,0,5,10,11,0,5,10);dg(0,22,5,10,0,86,5,10);dg(27,22,5,10,"
+            "11,86,5,10);dg(5,0,22,10,5,0,6,10);dg(5,22,22,10,5,86,6,10);dg(0,10,5,12,0,10,5,76);"
+            "dg(27,10,5,12,11,10,5,76);dg(5,10,22,12,5,10,6,76);");
 
   canvas_end_frame(&c);
   font_manager_deinit(&font_manager);
@@ -465,21 +478,22 @@ TEST(Canvas, draw_image_tile_h) {
 
   lcd_log_reset(lcd);
   rect_init(r, 0, 0, img.w, img.h);
-  rect_init(d, 0, 0, img.w/2, img.h);
+  rect_init(d, 0, 0, img.w / 2, img.h);
   ASSERT_EQ(canvas_draw_image_tile_h(&c, &img, &d), RET_OK);
   ASSERT_EQ(lcd_log_get_commands(lcd), "dg(0,0,16,32,0,0,16,32);");
-  
+
   lcd_log_reset(lcd);
   rect_init(r, 0, 0, img.w, img.h);
-  rect_init(d, 0, 0, img.w+10, img.h/2);
+  rect_init(d, 0, 0, img.w + 10, img.h / 2);
   ASSERT_EQ(canvas_draw_image_tile_h(&c, &img, &d), RET_OK);
   ASSERT_EQ(lcd_log_get_commands(lcd), "dg(0,0,32,32,0,0,32,16);dg(0,0,10,32,32,0,10,16);");
 
   lcd_log_reset(lcd);
   rect_init(r, 0, 0, img.w, img.h);
-  rect_init(d, 0, 0, img.w*2+10, img.h+10);
+  rect_init(d, 0, 0, img.w * 2 + 10, img.h + 10);
   ASSERT_EQ(canvas_draw_image_tile_h(&c, &img, &d), RET_OK);
-  ASSERT_EQ(lcd_log_get_commands(lcd), "dg(0,0,32,32,0,0,32,42);dg(0,0,32,32,32,0,32,42);dg(0,0,10,32,64,0,10,42);");
+  ASSERT_EQ(lcd_log_get_commands(lcd),
+            "dg(0,0,32,32,0,0,32,42);dg(0,0,32,32,32,0,32,42);dg(0,0,10,32,64,0,10,42);");
 
   canvas_end_frame(&c);
   font_manager_deinit(&font_manager);
@@ -503,21 +517,22 @@ TEST(Canvas, draw_image_tile_v) {
 
   lcd_log_reset(lcd);
   rect_init(r, 0, 0, img.w, img.h);
-  rect_init(d, 0, 0, img.w, img.h/2);
+  rect_init(d, 0, 0, img.w, img.h / 2);
   ASSERT_EQ(canvas_draw_image_tile_v(&c, &img, &d), RET_OK);
   ASSERT_EQ(lcd_log_get_commands(lcd), "dg(0,0,32,16,0,0,32,16);");
-  
+
   lcd_log_reset(lcd);
   rect_init(r, 0, 0, img.w, img.h);
-  rect_init(d, 0, 0, img.w+10, img.h/2);
+  rect_init(d, 0, 0, img.w + 10, img.h / 2);
   ASSERT_EQ(canvas_draw_image_tile_v(&c, &img, &d), RET_OK);
   ASSERT_EQ(lcd_log_get_commands(lcd), "dg(0,0,32,16,0,0,42,16);");
 
   lcd_log_reset(lcd);
   rect_init(r, 0, 0, img.w, img.h);
-  rect_init(d, 0, 0, img.w+10, img.h*2+10);
+  rect_init(d, 0, 0, img.w + 10, img.h * 2 + 10);
   ASSERT_EQ(canvas_draw_image_tile_v(&c, &img, &d), RET_OK);
-  ASSERT_EQ(lcd_log_get_commands(lcd), "dg(0,0,32,32,0,0,42,32);dg(0,0,32,32,0,32,42,32);dg(0,0,32,10,0,64,42,10);");
+  ASSERT_EQ(lcd_log_get_commands(lcd),
+            "dg(0,0,32,32,0,0,42,32);dg(0,0,32,32,0,32,42,32);dg(0,0,32,10,0,64,42,10);");
 
   canvas_end_frame(&c);
   font_manager_deinit(&font_manager);
@@ -541,24 +556,178 @@ TEST(Canvas, draw_image_tile) {
 
   lcd_log_reset(lcd);
   rect_init(r, 0, 0, img.w, img.h);
-  rect_init(d, 0, 0, img.w/2, img.h/2);
+  rect_init(d, 0, 0, img.w / 2, img.h / 2);
   ASSERT_EQ(canvas_draw_image_tile(&c, &img, &d), RET_OK);
   ASSERT_EQ(lcd_log_get_commands(lcd), "dg(0,0,16,16,0,0,16,16);");
-  
+
   lcd_log_reset(lcd);
   rect_init(r, 0, 0, img.w, img.h);
-  rect_init(d, 0, 0, img.w+10, img.h/2);
+  rect_init(d, 0, 0, img.w + 10, img.h / 2);
   ASSERT_EQ(canvas_draw_image_tile(&c, &img, &d), RET_OK);
   ASSERT_EQ(lcd_log_get_commands(lcd), "dg(0,0,32,16,0,0,32,16);dg(0,0,10,16,32,0,10,16);");
 
   lcd_log_reset(lcd);
   rect_init(r, 0, 0, img.w, img.h);
-  rect_init(d, 0, 0, img.w*2+10, img.h*2+10);
+  rect_init(d, 0, 0, img.w * 2 + 10, img.h * 2 + 10);
   ASSERT_EQ(canvas_draw_image_tile(&c, &img, &d), RET_OK);
-  ASSERT_EQ(lcd_log_get_commands(lcd), "dg(0,0,32,32,0,0,32,32);dg(0,0,32,32,32,0,32,32);dg(0,0,10,32,64,0,10,32);dg(0,0,32,32,0,32,32,32);dg(0,0,32,32,32,32,32,32);dg(0,0,10,32,64,32,10,32);dg(0,0,32,10,0,64,32,10);dg(0,0,32,10,32,64,32,10);dg(0,0,10,10,64,64,10,10);");
+  ASSERT_EQ(lcd_log_get_commands(lcd),
+            "dg(0,0,32,32,0,0,32,32);dg(0,0,32,32,32,0,32,32);dg(0,0,10,32,64,0,10,32);dg(0,0,32,"
+            "32,0,32,32,32);dg(0,0,32,32,32,32,32,32);dg(0,0,10,32,64,32,10,32);dg(0,0,32,10,0,64,"
+            "32,10);dg(0,0,32,10,32,64,32,10);dg(0,0,10,10,64,64,10,10);");
 
   canvas_end_frame(&c);
   font_manager_deinit(&font_manager);
   lcd_destroy(lcd);
 }
 
+TEST(Canvas, draw_image_scale_x) {
+  rect_t r;
+  rect_t d;
+  canvas_t c;
+  bitmap_t img;
+  font_manager_t font_manager;
+  font_manager_init(&font_manager);
+  lcd_t* lcd = lcd_log_init(800, 600);
+  canvas_init(&c, lcd, &font_manager);
+
+  img.w = 32;
+  img.h = 32;
+  rect_init(r, 0, 0, 320, 480);
+  canvas_begin_frame(&c, &r);
+
+  lcd_log_reset(lcd);
+  rect_init(r, 0, 0, img.w, img.h);
+  rect_init(d, 0, 0, img.w / 2, img.h / 2);
+  ASSERT_EQ(canvas_draw_image_scale_x(&c, &img, &d), RET_OK);
+  ASSERT_EQ(lcd_log_get_commands(lcd), "dg(0,0,32,32,0,0,16,16);");
+
+  lcd_log_reset(lcd);
+  rect_init(r, 0, 0, img.w, img.h);
+  rect_init(d, 0, 0, img.w + 10, img.h / 2);
+  ASSERT_EQ(canvas_draw_image_scale_x(&c, &img, &d), RET_OK);
+  ASSERT_EQ(lcd_log_get_commands(lcd), "dg(0,0,32,12,0,0,42,16);");
+
+  lcd_log_reset(lcd);
+  rect_init(r, 0, 0, img.w, img.h);
+  rect_init(d, 0, 0, img.w * 2, img.h * 2 + 10);
+  ASSERT_EQ(canvas_draw_image_scale_x(&c, &img, &d), RET_OK);
+  ASSERT_EQ(lcd_log_get_commands(lcd), "dg(0,0,32,32,0,0,64,64);");
+
+  canvas_end_frame(&c);
+  font_manager_deinit(&font_manager);
+  lcd_destroy(lcd);
+}
+
+TEST(Canvas, draw_image_scale_y) {
+  rect_t r;
+  rect_t d;
+  canvas_t c;
+  bitmap_t img;
+  font_manager_t font_manager;
+  font_manager_init(&font_manager);
+  lcd_t* lcd = lcd_log_init(800, 600);
+  canvas_init(&c, lcd, &font_manager);
+
+  img.w = 32;
+  img.h = 32;
+  rect_init(r, 0, 0, 320, 480);
+  canvas_begin_frame(&c, &r);
+
+  lcd_log_reset(lcd);
+  rect_init(r, 0, 0, img.w, img.h);
+  rect_init(d, 0, 0, img.w / 2, img.h / 2);
+  ASSERT_EQ(canvas_draw_image_scale_y(&c, &img, &d), RET_OK);
+  ASSERT_EQ(lcd_log_get_commands(lcd), "dg(0,0,32,32,0,0,16,16);");
+
+  lcd_log_reset(lcd);
+  rect_init(r, 0, 0, img.w, img.h);
+  rect_init(d, 0, 0, img.w + 10, img.h / 2);
+  ASSERT_EQ(canvas_draw_image_scale_y(&c, &img, &d), RET_OK);
+  ASSERT_EQ(lcd_log_get_commands(lcd), "dg(0,0,32,32,0,0,16,16);");
+
+  lcd_log_reset(lcd);
+  rect_init(r, 0, 0, img.w, img.h);
+  rect_init(d, 0, 0, img.w * 2, img.h * 2 + 10);
+  ASSERT_EQ(canvas_draw_image_scale_y(&c, &img, &d), RET_OK);
+  ASSERT_EQ(lcd_log_get_commands(lcd), "dg(0,0,27,32,0,0,64,74);");
+
+  canvas_end_frame(&c);
+  font_manager_deinit(&font_manager);
+  lcd_destroy(lcd);
+}
+
+TEST(Canvas, draw_image_scale) {
+  rect_t r;
+  rect_t d;
+  canvas_t c;
+  bitmap_t img;
+  font_manager_t font_manager;
+  font_manager_init(&font_manager);
+  lcd_t* lcd = lcd_log_init(800, 600);
+  canvas_init(&c, lcd, &font_manager);
+
+  img.w = 32;
+  img.h = 32;
+  rect_init(r, 0, 0, 320, 480);
+  canvas_begin_frame(&c, &r);
+
+  lcd_log_reset(lcd);
+  rect_init(r, 0, 0, img.w, img.h);
+  rect_init(d, 0, 0, img.w / 2, img.h / 2);
+  ASSERT_EQ(canvas_draw_image_scale(&c, &img, &d), RET_OK);
+  ASSERT_EQ(lcd_log_get_commands(lcd), "dg(0,0,32,32,0,0,16,16);");
+
+  lcd_log_reset(lcd);
+  rect_init(r, 0, 0, img.w, img.h);
+  rect_init(d, 0, 0, img.w + 10, img.h / 2);
+  ASSERT_EQ(canvas_draw_image_scale(&c, &img, &d), RET_OK);
+  ASSERT_EQ(lcd_log_get_commands(lcd), "dg(0,0,32,32,13,0,16,16);");
+
+  lcd_log_reset(lcd);
+  rect_init(r, 0, 0, img.w, img.h);
+  rect_init(d, 0, 0, img.w * 2, img.h * 2 + 10);
+  ASSERT_EQ(canvas_draw_image_scale(&c, &img, &d), RET_OK);
+  ASSERT_EQ(lcd_log_get_commands(lcd), "dg(0,0,32,32,0,5,64,64);");
+
+  canvas_end_frame(&c);
+  font_manager_deinit(&font_manager);
+  lcd_destroy(lcd);
+}
+
+TEST(Canvas, draw_image_center) {
+  rect_t r;
+  rect_t d;
+  canvas_t c;
+  bitmap_t img;
+  font_manager_t font_manager;
+  font_manager_init(&font_manager);
+  lcd_t* lcd = lcd_log_init(800, 600);
+  canvas_init(&c, lcd, &font_manager);
+
+  img.w = 32;
+  img.h = 32;
+  rect_init(r, 0, 0, 320, 480);
+  canvas_begin_frame(&c, &r);
+
+  lcd_log_reset(lcd);
+  rect_init(r, 0, 0, img.w, img.h);
+  rect_init(d, 0, 0, img.w, img.h);
+  ASSERT_EQ(canvas_draw_image_center(&c, &img, &d), RET_OK);
+  ASSERT_EQ(lcd_log_get_commands(lcd), "dg(0,0,32,32,0,0,32,32);");
+
+  lcd_log_reset(lcd);
+  rect_init(r, 0, 0, img.w, img.h);
+  rect_init(d, 0, 0, img.w + 10, img.h + 10);
+  ASSERT_EQ(canvas_draw_image_center(&c, &img, &d), RET_OK);
+  ASSERT_EQ(lcd_log_get_commands(lcd), "dg(0,0,32,32,5,5,32,32);");
+
+  lcd_log_reset(lcd);
+  rect_init(r, 0, 0, img.w, img.h);
+  rect_init(d, 0, 0, img.w * 2, img.h * 2 + 10);
+  ASSERT_EQ(canvas_draw_image_center(&c, &img, &d), RET_OK);
+  ASSERT_EQ(lcd_log_get_commands(lcd), "dg(0,0,32,32,16,21,32,32);");
+
+  canvas_end_frame(&c);
+  font_manager_deinit(&font_manager);
+  lcd_destroy(lcd);
+}