[QP] Add RGB565 surface. Docs clarification, cleanup, tabsification, and reordering. (#18396)

1 files changed, 42 insertions, 0 deletions

diff --git a/drivers/painter/generic/qp_rgb565_surface.h b/drivers/painter/generic/qp_rgb565_surface.h
new file mode 100644
index 0000000000..19e919bb91
--- /dev/null
+++ b/drivers/painter/generic/qp_rgb565_surface.h
@@ -0,0 +1,42 @@
+// Copyright 2022 Nick Brassel (@tzarc)
+// SPDX-License-Identifier: GPL-2.0-or-later
+#include "qp_internal.h"
+
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+// Quantum Painter RGB565 surface configurables (add to your keyboard's config.h)
+
+#ifndef RGB565_SURFACE_NUM_DEVICES
+/**
+ * @def This controls the maximum number of surface devices that Quantum Painter can use at any one time.
+ *      Increasing this number allows for multiple framebuffers to be used. Each requires its own RAM allocation.
+ */
+#    define RGB565_SURFACE_NUM_DEVICES 1
+#endif
+
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+// Forward declarations
+
+#ifdef QUANTUM_PAINTER_RGB565_SURFACE_ENABLE
+/**
+ * Factory method for an RGB565 surface (aka framebuffer).
+ *
+ * @param panel_width[in] the width of the display panel
+ * @param panel_height[in] the height of the display panel
+ * @param buffer[in] pointer to a preallocated buffer of size `(sizeof(uint16_t) * panel_width * panel_height)`
+ * @return the device handle used with all drawing routines in Quantum Painter
+ */
+painter_device_t qp_rgb565_make_surface(uint16_t panel_width, uint16_t panel_height, void *buffer);
+
+/**
+ * Helper method to draw the dirty contents of the framebuffer to the target device.
+ *
+ * After successful completion, the dirty area is reset.
+ *
+ * @param surface[in] the surface to copy from
+ * @param display[in] the display to copy into
+ * @param x[in] the x-location of the original position of the framebuffer
+ * @param y[in] the y-location of the original position of the framebuffer
+ * @return whether the draw operation completed successfully
+ */
+bool qp_rgb565_surface_draw(painter_device_t surface, painter_device_t display, uint16_t x, uint16_t y);
+#endif // QUANTUM_PAINTER_RGB565_SURFACE_ENABLE