1 files changed, 89 insertions, 0 deletions
diff --git a/circuitpython/shared-module/displayio/TileGrid.h b/circuitpython/shared-module/displayio/TileGrid.h
new file mode 100644
index 0000000..b5aab51
--- /dev/null
+++ b/circuitpython/shared-module/displayio/TileGrid.h
@@ -0,0 +1,89 @@
+/*
+ * This file is part of the Micro Python project, http://micropython.org/
+ *
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2019 Scott Shawcroft for Adafruit Industries
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#ifndef MICROPY_INCLUDED_SHARED_MODULE_DISPLAYIO_TILEGRID_H
+#define MICROPY_INCLUDED_SHARED_MODULE_DISPLAYIO_TILEGRID_H
+
+#include <stdbool.h>
+#include <stdint.h>
+
+#include "py/obj.h"
+#include "shared-module/displayio/area.h"
+#include "shared-module/displayio/Palette.h"
+
+typedef struct {
+    mp_obj_base_t base;
+    mp_obj_t bitmap;
+    mp_obj_t pixel_shader;
+    int16_t x;
+    int16_t y;
+    uint16_t pixel_width;
+    uint16_t pixel_height;
+    uint16_t bitmap_width_in_tiles;
+    ;
+    uint16_t tiles_in_bitmap;
+    uint16_t width_in_tiles;
+    uint16_t height_in_tiles;
+    uint16_t tile_width;
+    uint16_t tile_height;
+    uint16_t top_left_x;
+    uint16_t top_left_y;
+    uint8_t *tiles;
+    const displayio_buffer_transform_t *absolute_transform;
+    displayio_area_t dirty_area; // Stored as a relative area until the refresh area is fetched.
+    displayio_area_t previous_area; // Stored as an absolute area.
+    displayio_area_t current_area; // Stored as an absolute area so it applies across frames.
+    bool partial_change : 1;
+    bool full_change : 1;
+    bool moved : 1;
+    bool inline_tiles : 1;
+    bool in_group : 1;
+    bool flip_x : 1;
+    bool flip_y : 1;
+    bool transpose_xy  : 1;
+    bool hidden : 1;
+    bool hidden_by_parent : 1;
+    uint8_t padding : 6;
+} displayio_tilegrid_t;
+
+void displayio_tilegrid_set_hidden_by_parent(displayio_tilegrid_t *self, bool hidden);
+
+// Updating the screen is a three stage process.
+
+// The first stage is used to determine i
+displayio_area_t *displayio_tilegrid_get_refresh_areas(displayio_tilegrid_t *self, displayio_area_t *tail);
+
+// Area is always in absolute screen coordinates. Update transform is used to inform TileGrids how
+// they relate to it.
+bool displayio_tilegrid_fill_area(displayio_tilegrid_t *self, const _displayio_colorspace_t *colorspace, const displayio_area_t *area, uint32_t *mask, uint32_t *buffer);
+void displayio_tilegrid_update_transform(displayio_tilegrid_t *group, const displayio_buffer_transform_t *parent_transform);
+
+// Fills in area with the maximum bounds of all related pixels in the last rendered frame. Returns
+// false if the tilegrid wasn't rendered in the last frame.
+bool displayio_tilegrid_get_previous_area(displayio_tilegrid_t *self, displayio_area_t *area);
+void displayio_tilegrid_finish_refresh(displayio_tilegrid_t *self);
+
+#endif // MICROPY_INCLUDED_SHARED_MODULE_DISPLAYIO_TILEGRID_H