From 09f362a1ed7d096eef62f9892da2c3f89eeed28e Mon Sep 17 00:00:00 2001
From: Gabor Kiss-Vamosi <kisvegabor@gmail.com>
Date: Sat, 30 Mar 2019 06:23:41 +0100
Subject: [PATCH] add disp. rotate config for disp_drv

---
 src/lv_core/lv_refr.c    |  4 ++--
 src/lv_hal/lv_hal_disp.c | 24 ++++++++++++++++++++----
 src/lv_hal/lv_hal_disp.h |  1 +
 3 files changed, 23 insertions(+), 6 deletions(-)

diff --git a/src/lv_core/lv_refr.c b/src/lv_core/lv_refr.c
index b55fbe64b..29f97cfe9 100644
--- a/src/lv_core/lv_refr.c
+++ b/src/lv_core/lv_refr.c
@@ -92,8 +92,8 @@ void lv_inv_area(lv_disp_t * disp, const lv_area_t * area_p)
     lv_area_t scr_area;
     scr_area.x1 = 0;
     scr_area.y1 = 0;
-    scr_area.x2 = disp->driver.hor_res - 1;
-    scr_area.y2 = disp->driver.ver_res - 1;
+    scr_area.x2 = lv_disp_get_hor_res(disp) - 1;
+    scr_area.y2 = lv_disp_get_ver_res(disp) - 1;
 
     lv_area_t com_area;
     bool suc;
diff --git a/src/lv_hal/lv_hal_disp.c b/src/lv_hal/lv_hal_disp.c
index 9993ae11b..6389e0e60 100644
--- a/src/lv_hal/lv_hal_disp.c
+++ b/src/lv_hal/lv_hal_disp.c
@@ -60,6 +60,7 @@ void lv_disp_drv_init(lv_disp_drv_t * driver)
     driver->hor_res = LV_HOR_RES_MAX;
     driver->ver_res = LV_VER_RES_MAX;
     driver->buffer = NULL;
+    driver->rotated = 1;
 
 #if LV_ANTIALIAS
     driver->antialiasing = true;
@@ -171,6 +172,21 @@ void lv_disp_remove(lv_disp_t * disp)
     if(was_default) lv_disp_set_default(lv_ll_get_head(&LV_GC_ROOT(_lv_disp_ll)));
 }
 
+/**
+ * Update the driver in run time.
+ * @param disp Pointer toa display. (return value of `lv_disp_drv_register`)
+ * @param new_drv pointer to the new driver
+ */
+void lv_disp_update_drv(lv_disp_t * disp, lv_disp_drv_t * new_drv)
+{
+    memcpy(&disp->driver, new_drv, sizeof(lv_disp_drv_t));
+
+    lv_obj_t * scr;
+    LV_LL_READ(disp->scr_ll, scr) {
+        lv_obj_set_size(scr, lv_disp_get_hor_res(disp), lv_disp_get_ver_res(disp));
+    }
+}
+
 /**
  * Set a default screen. The new screens will be created on it by default.
  * @param disp pointer to a display
@@ -198,8 +214,8 @@ lv_coord_t lv_disp_get_hor_res(lv_disp_t * disp)
 {
     if(disp == NULL) disp = lv_disp_get_default();
 
-    if(disp == NULL) return LV_HOR_RES_MAX;
-    else return disp->driver.hor_res;
+    if(disp == NULL) return disp->driver.rotated == 0 ? LV_HOR_RES_MAX : LV_VER_RES_MAX;
+    else return disp->driver.rotated == 0 ? disp->driver.hor_res : disp->driver.ver_res;
 }
 
 /**
@@ -211,8 +227,8 @@ lv_coord_t lv_disp_get_ver_res(lv_disp_t * disp)
 {
     if(disp == NULL) disp = lv_disp_get_default();
 
-    if(disp == NULL) return LV_VER_RES_MAX;
-    else return disp->driver.ver_res;
+    if(disp == NULL) return disp->driver.rotated == 0 ? LV_VER_RES_MAX : LV_HOR_RES_MAX;
+    else return disp->driver.rotated == 0 ? disp->driver.ver_res : disp->driver.hor_res;
 }
 
 /**
diff --git a/src/lv_hal/lv_hal_disp.h b/src/lv_hal/lv_hal_disp.h
index 47818f513..3bd091959 100644
--- a/src/lv_hal/lv_hal_disp.h
+++ b/src/lv_hal/lv_hal_disp.h
@@ -71,6 +71,7 @@ typedef struct _disp_drv_t {
 #if LV_ANTIALIAS
     uint32_t antialiasing   :1;
 #endif
+    uint32_t rotated        :1;     /*1: turn the display by 90 degree.*/
 
     /* MANDATORY: Write the internal buffer (VDB) to the display. 'lv_flush_ready()' has to be called when finished */
     void (*flush_cb)(struct _disp_drv_t * disp_drv, const lv_area_t * area, lv_color_t * color_p);