From e298f493cec6590370899194c247a88ee07d7f5a Mon Sep 17 00:00:00 2001
From: Ali Rostami <9710249+ali-rostami@users.noreply.github.com>
Date: Mon, 4 Mar 2019 12:41:28 +0330
Subject: [PATCH 1/4] add offset function

---
 lv_objx/lv_img.c | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/lv_objx/lv_img.c b/lv_objx/lv_img.c
index c9fb42875..907f09e5d 100644
--- a/lv_objx/lv_img.c
+++ b/lv_objx/lv_img.c
@@ -78,6 +78,8 @@ lv_obj_t * lv_img_create(lv_obj_t * par, const lv_obj_t * copy)
     ext->w = lv_obj_get_width(new_img);
     ext->h = lv_obj_get_height(new_img);
     ext->auto_size = 1;
+    ext->offset.x = 0;
+    ext->offset.y = 0;
 #if USE_LV_MULTI_LANG
     ext->lang_txt_id = LV_LANG_TXT_ID_NONE;
 #endif
@@ -235,6 +237,19 @@ void lv_img_set_auto_size(lv_obj_t * img, bool en)
     ext->auto_size = (en == false ? 0 : 1);
 }
 
+/**
+ * Set an offset for the source of an image.
+ * so the image will be displayed from this new origin.
+ * @param img pointer to an image
+ * @param en true: auto size enable, false: auto size disable
+ */
+void lv_img_set_offset(lv_obj_t *img, lv_point_t offset)
+{
+    lv_img_ext_t * ext = lv_obj_get_ext_attr(img);
+
+    if((ext->offset.x < ext->w - 1) && (ext->offset.y < ext->h - 1))
+	    ext->offset = offset;
+}
 
 /*=====================
  * Getter functions
@@ -325,6 +340,9 @@ static bool lv_img_design(lv_obj_t * img, const lv_area_t * mask, lv_design_mode
         lv_obj_get_coords(img, &coords);
 
         if(ext->src_type == LV_IMG_SRC_FILE || ext->src_type == LV_IMG_SRC_VARIABLE) {
+            coords.x1 -= ext->offset.x;
+            coords.y1 -= ext->offset.y;
+            
             LV_LOG_TRACE("lv_img_design: start to draw image");
             lv_area_t cords_tmp;
             cords_tmp.y1 = coords.y1;

From c2e3e9d494f6b46f6f8ad65e34ad131044d08b91 Mon Sep 17 00:00:00 2001
From: Ali Rostami <9710249+ali-rostami@users.noreply.github.com>
Date: Mon, 4 Mar 2019 12:47:03 +0330
Subject: [PATCH 2/4] add offset member to lv_img_ext_t

---
 lv_objx/lv_img.h | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/lv_objx/lv_img.h b/lv_objx/lv_img.h
index 8ee861679..59f42af46 100644
--- a/lv_objx/lv_img.h
+++ b/lv_objx/lv_img.h
@@ -40,7 +40,7 @@ typedef struct
     /*No inherited ext. because inherited from the base object*/ /*Ext. of ancestor*/
     /*New data for this type */
     const void * src;             /*Image source: Pointer to an array or a file or a symbol*/
-
+    lv_point_t offset;
     lv_coord_t w;               /*Width of the image (Handled by the library)*/
     lv_coord_t h;               /*Height of the image (Handled by the library)*/
 #if USE_LV_MULTI_LANG
@@ -103,6 +103,14 @@ static inline void lv_img_set_file(lv_obj_t * img, const char * fn)
  */
 void lv_img_set_auto_size(lv_obj_t * img, bool autosize_en);
 
+ /**
+ * Set an offset for the source of an image.
+ * so the image will be displayed from this new origin.
+ * @param img pointer to an image
+ * @param en true: auto size enable, false: auto size disable
+ */
+void lv_img_set_offset(lv_obj_t *img, lv_point_t offset);
+    
 /**
  * Set the style of an image
  * @param img pointer to an image object

From fc375fd115ab8d1566759a87de855cbd76ab8cd3 Mon Sep 17 00:00:00 2001
From: Ali Rostami <9710249+ali-rostami@users.noreply.github.com>
Date: Wed, 6 Mar 2019 17:33:14 +0330
Subject: [PATCH 3/4] define lv_img_set_offset() with new params

---
 lv_objx/lv_img.c | 43 ++++++++++++++++++++++++++++++++++++++-----
 1 file changed, 38 insertions(+), 5 deletions(-)

diff --git a/lv_objx/lv_img.c b/lv_objx/lv_img.c
index 907f09e5d..0a203eca5 100644
--- a/lv_objx/lv_img.c
+++ b/lv_objx/lv_img.c
@@ -239,16 +239,49 @@ void lv_img_set_auto_size(lv_obj_t * img, bool en)
 
 /**
  * Set an offset for the source of an image.
- * so the image will be displayed from this new origin.
+ * so the image will be displayed from the new origin.
  * @param img pointer to an image
- * @param en true: auto size enable, false: auto size disable
+ * @param x: the new offset along x axis.
+ * @param y: the new offset along y axis.
  */
-void lv_img_set_offset(lv_obj_t *img, lv_point_t offset)
+void lv_img_set_offset(lv_obj_t *img, lv_coord_t x, lv_coord_t y)
 {
     lv_img_ext_t * ext = lv_obj_get_ext_attr(img);
 
-    if((ext->offset.x < ext->w - 1) && (ext->offset.y < ext->h - 1))
-	    ext->offset = offset;
+    if((x < ext->w - 1) && (y < ext->h - 1)) {
+        ext->offset.x = x;
+        ext->offset.y = y;
+    }
+}
+
+/**
+ * Set an offset for the source of an image.
+ * so the image will be displayed from the new origin.
+ * @param img pointer to an image
+ * @param x: the new offset along x axis.
+ */
+void lv_img_set_offset_x(lv_obj_t *img, lv_coord_t x)
+{
+    lv_img_ext_t * ext = lv_obj_get_ext_attr(img);
+
+    if(x < ext->w - 1) {
+        ext->offset.x = x;
+    }
+}
+
+/**
+ * Set an offset for the source of an image.
+ * so the image will be displayed from the new origin.
+ * @param img pointer to an image
+ * @param y: the new offset along y axis.
+ */
+void lv_img_set_offset_y(lv_obj_t *img, lv_coord_t y)
+{
+    lv_img_ext_t * ext = lv_obj_get_ext_attr(img);
+
+    if(y < ext->h - 1) {
+        ext->offset.y = y;
+    }
 }
 
 /*=====================

From 0bce1876c198d94b6e4ab39de9217fc87443b864 Mon Sep 17 00:00:00 2001
From: Ali Rostami <9710249+ali-rostami@users.noreply.github.com>
Date: Wed, 6 Mar 2019 17:35:14 +0330
Subject: [PATCH 4/4] declare lv_img_set_offset() with new params.

---
 lv_objx/lv_img.h | 25 +++++++++++++++++++++----
 1 file changed, 21 insertions(+), 4 deletions(-)

diff --git a/lv_objx/lv_img.h b/lv_objx/lv_img.h
index 59f42af46..73a0d4246 100644
--- a/lv_objx/lv_img.h
+++ b/lv_objx/lv_img.h
@@ -103,13 +103,30 @@ static inline void lv_img_set_file(lv_obj_t * img, const char * fn)
  */
 void lv_img_set_auto_size(lv_obj_t * img, bool autosize_en);
 
- /**
+/**
  * Set an offset for the source of an image.
- * so the image will be displayed from this new origin.
+ * so the image will be displayed from the new origin.
  * @param img pointer to an image
- * @param en true: auto size enable, false: auto size disable
+ * @param x: the new offset along x axis.
+ * @param y: the new offset along y axis.
  */
-void lv_img_set_offset(lv_obj_t *img, lv_point_t offset);
+void lv_img_set_offset(lv_obj_t *img, lv_coord_t x, lv_coord_t y);
+
+/**
+ * Set an offset for the source of an image.
+ * so the image will be displayed from the new origin.
+ * @param img pointer to an image
+ * @param x: the new offset along x axis.
+ */
+void lv_img_set_offset_x(lv_obj_t *img, lv_coord_t x);
+
+/**
+ * Set an offset for the source of an image.
+ * so the image will be displayed from the new origin.
+ * @param img pointer to an image
+ * @param y: the new offset along y axis.
+ */
+void lv_img_set_offset_y(lv_obj_t *img, lv_coord_t y);
     
 /**
  * Set the style of an image