Adding QImage display driver

docs/releases.txt

@@ -10,6 +10,7 @@ FIX:		Fixing issue in STM32F746G-Discovery board file that resulted in bad color
 FEATURE:	Added gwinPrintg()
 FIX:		Fix sprintg and related functions handling of NULL pointers.
 FIX:		Fixing width calculation of gdispGDrawString() and gdispGFillString().
+FEATURE:	Added QImage display driver.
 
 
 *** Release 2.5 ***

drivers/gdisp/QImage/driver.mk

@@ -0,0 +1,2 @@
+GFXINC += $(GFXLIB)/drivers/gdisp/QImage
+GFXSRC += $(GFXLIB)/drivers/gdisp/QImage/gdisp_lld_QImage.c

drivers/gdisp/QImage/gdisp_lld_config.h

@@ -0,0 +1,21 @@
+/*
+ * This file is subject to the terms of the GFX License. If a copy of
+ * the license was not distributed with this file, you can obtain one at:
+ *
+ *              http://ugfx.org/license.html
+ */
+
+#pragma once
+
+#if GFX_USE_GDISP
+
+/*===========================================================================*/
+/* Driver hardware support.                                                  */
+/*===========================================================================*/
+
+#define GDISP_HARDWARE_DRAWPIXEL		TRUE
+#define GDISP_HARDWARE_PIXELREAD		TRUE
+
+#define GDISP_LLD_PIXELFORMAT			GDISP_PIXELFORMAT_RGB888
+
+#endif	/* GFX_USE_GDISP */

drivers/gdisp/QImage/gdisp_lld_driver.c

@@ -0,0 +1,64 @@
+/*b
+ * This file is subject to the terms of the GFX License. If a copy of
+ * the license was not distributed with this file, you can obtain one at:
+ *
+ *              http://ugfx.org/license.html
+ */
+
+#include "../../../gfx.h"
+
+#if GFX_USE_GDISP
+
+#define GDISP_DRIVER_VMT			GDISPVMT_QImage
+#include "gdisp_lld_config.h"
+#include "../../../src/gdisp/gdisp_driver.h"
+#include "gdisp_lld_qimage.h"
+
+#ifndef GDISP_SCREEN_HEIGHT
+    #define GDISP_SCREEN_HEIGHT		512
+#endif
+#ifndef GDISP_SCREEN_WIDTH
+    #define GDISP_SCREEN_WIDTH		512
+#endif
+#ifndef GDISP_INITIAL_CONTRAST
+	#define GDISP_INITIAL_CONTRAST	50
+#endif
+#ifndef GDISP_INITIAL_BACKLIGHT
+	#define GDISP_INITIAL_BACKLIGHT	100
+#endif
+
+LLDSPEC bool_t gdisp_lld_init(GDisplay *g)
+{
+	/* No board interface and no private driver area */
+    g->priv = g->board = 0;
+
+    if (!qimage_init(g, GDISP_SCREEN_WIDTH, GDISP_SCREEN_HEIGHT)) {
+        return FALSE;
+    }
+
+	/* Initialise the GDISP structure */
+	g->g.Width = GDISP_SCREEN_WIDTH;
+	g->g.Height = GDISP_SCREEN_HEIGHT;
+	g->g.Orientation = GDISP_ROTATE_0;
+	g->g.Powermode = powerOn;
+	g->g.Backlight = GDISP_INITIAL_BACKLIGHT;
+	g->g.Contrast = GDISP_INITIAL_CONTRAST;
+
+	return TRUE;
+}
+
+#if GDISP_HARDWARE_DRAWPIXEL
+    void gdisp_lld_draw_pixel(GDisplay *g)
+    {
+        qimage_setPixel(g);
+	}
+#endif
+
+#if GDISP_HARDWARE_PIXELREAD
+    color_t gdisp_lld_get_pixel_color(GDisplay *g)
+    {
+        return qimage_getPixel(g);
+	}
+#endif
+
+#endif /* GFX_USE_GDISP */

drivers/gdisp/QImage/gdisp_lld_qimage.cpp

@@ -0,0 +1,38 @@
+#include <QImage>
+#include "../../../gfx.h"
+#include "../../../src/gdisp/gdisp_driver.h"
+#include "gdisp_lld_qimage.h"
+
+bool_t qimage_init(GDisplay* g, coord_t width, coord_t height)
+{
+    QImage* qimage = new QImage(width, height, QImage::Format_RGB888);
+    if (!qimage) {
+        return FALSE;
+    }
+    qimage->fill(Qt::gray);
+
+    g->priv = qimage;
+
+    return TRUE;
+}
+
+void qimage_setPixel(GDisplay* g)
+{
+    QImage* qimage = static_cast<QImage*>(g->priv);
+    if (!qimage) {
+        return;
+    }
+
+    QRgb rgbVal = qRgb(RED_OF(g->p.color), GREEN_OF(g->p.color), BLUE_OF(g->p.color));
+    qimage->setPixel(g->p.x, g->p.y, rgbVal);
+}
+
+color_t qimage_getPixel(GDisplay* g)
+{
+    const QImage* qimage = static_cast<const QImage*>(g->priv);
+    if (!qimage) {
+        return 0;
+    }
+
+    return static_cast<color_t>(qimage->pixel(g->p.x, g->p.y));
+}

drivers/gdisp/QImage/gdisp_lld_qimage.h

@@ -0,0 +1,15 @@
+#pragma once
+
+#include "../../../gfx.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+bool_t qimage_init(GDisplay* g, coord_t width, coord_t height);
+void qimage_setPixel(GDisplay* g);
+color_t qimage_getPixel(GDisplay* g);
+
+#ifdef __cplusplus
+}
+#endif

drivers/gdisp/readme.txt

@@ -29,6 +29,7 @@ ST7565        - Small monochrome LCD
 STM32LTDC     - STM32 ART graphics STM32F4 and STM32F7 series CPU's
 TestStub      - NULL driver just to test compile
 TLS8204       - Small monochrome LCD
+QImage        - Driver that allows rendering into a QImage object (of the Qt framework)
 uGFXnet       - Remote Network display (in drivers/multiple/uGFXnet directory)
 Win32         - Microsoft Windows (in drivers/multiple/Win32 directory)
 X             - X Windows (Xlib) (in drivers/multiple/X directory)