Merge pull request #1940 from tannewt/dirty_area

 Add partial display update support.

1 files changed, 22 insertions, 16 deletions

diff --git a/shared-module/displayio/Display.h b/shared-module/displayio/Display.h
index 52f98a252..fa8902ced 100644
--- a/shared-module/displayio/Display.h
+++ b/shared-module/displayio/Display.h
@@ -31,6 +31,8 @@
 #include "shared-bindings/displayio/Group.h"
 #include "shared-bindings/pulseio/PWMOut.h"
 
+#include "shared-module/displayio/area.h"
+
 typedef bool (*display_bus_begin_transaction)(mp_obj_t bus);
 typedef void (*display_bus_send)(mp_obj_t bus, bool command, uint8_t *data, uint32_t data_length);
 typedef void (*display_bus_end_transaction)(mp_obj_t bus);
@@ -38,19 +40,8 @@ typedef void (*display_bus_end_transaction)(mp_obj_t bus);
 typedef struct {
     mp_obj_base_t base;
     mp_obj_t bus;
-    uint16_t width;
-    uint16_t height;
-    uint16_t color_depth;
-    uint8_t set_column_command;
-    uint8_t set_row_command;
-    uint8_t write_ram_command;
     displayio_group_t *current_group;
-    bool refresh;
     uint64_t last_refresh;
-    int16_t colstart;
-    int16_t rowstart;
-    bool single_byte_bounds;
-    bool data_as_commands;
     display_bus_begin_transaction begin_transaction;
     display_bus_send send;
     display_bus_end_transaction end_transaction;
@@ -59,14 +50,29 @@ typedef struct {
         pulseio_pwmout_obj_t backlight_pwm;
     };
     uint64_t last_backlight_refresh;
-    bool auto_brightness:1;
-    bool updating_backlight:1;
-    bool mirror_x;
-    bool mirror_y;
-    bool transpose_xy;
+    displayio_buffer_transform_t transform;
+    displayio_area_t area;
+    uint16_t width;
+    uint16_t height;
+    uint16_t color_depth;
+    int16_t colstart;
+    int16_t rowstart;
+    uint8_t set_column_command;
+    uint8_t set_row_command;
+    uint8_t write_ram_command;
+    bool refresh;
+    bool single_byte_bounds;
+    bool data_as_commands;
+    bool auto_brightness;
+    bool updating_backlight;
+    bool full_refresh; // New group means we need to refresh the whole display.
 } displayio_display_obj_t;
 
+void displayio_display_start_refresh(displayio_display_obj_t* self);
+const displayio_area_t* displayio_display_get_refresh_areas(displayio_display_obj_t *self);
+bool displayio_display_fill_area(displayio_display_obj_t *self, displayio_area_t* area, uint32_t* mask, uint32_t *buffer);
 void displayio_display_update_backlight(displayio_display_obj_t* self);
+bool displayio_display_clip_area(displayio_display_obj_t *self, const displayio_area_t* area, displayio_area_t* clipped);
 void release_display(displayio_display_obj_t* self);
 
 #endif // MICROPY_INCLUDED_SHARED_MODULE_DISPLAYIO_DISPLAY_H