add rtgui_win subfield,Highlight the ease of use

git-svn-id: https://rt-thread.googlecode.com/svn/trunk@1345 bbd45198-f89e-11dd-88c7-29a3b14d5316

1 files changed, 323 insertions, 0 deletions

diff --git a/components/rtgui_win/common/dc_buffer.c b/components/rtgui_win/common/dc_buffer.c
new file mode 100644
index 0000000000..730156e89c
--- /dev/null
+++ b/components/rtgui_win/common/dc_buffer.c
@@ -0,0 +1,323 @@
+/*
+ * File      : dc_buffer.c
+ * This file is part of RT-Thread RTOS
+ * COPYRIGHT (C) 2006 - 2009, RT-Thread Development Team
+ *
+ * The license and distribution terms for this file may be
+ * found in the file LICENSE in this distribution or at
+ * http://www.rt-thread.org/license/LICENSE
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2009-10-16     Bernard      first version
+ */
+#include <rtgui/rtgui.h>
+#include <rtgui/dc.h>
+#include <rtgui/blit.h>
+#include <rtgui/dc_hw.h>
+#include <rtgui/color.h>
+#include <rtgui/rtgui_system.h>
+
+#define hw_driver				(rtgui_graphic_driver_get_default())
+
+struct rtgui_dc_buffer
+{
+	struct rtgui_dc parent;
+
+	/* graphic context */
+	rtgui_gc_t gc;
+
+	/* width and height */
+	rt_uint16_t width, height;
+	rt_uint16_t pitch;
+
+	/* blit info */
+	rtgui_region_t clip;
+
+	/* pixel data */
+	rt_uint8_t* pixel;
+};
+
+static rt_bool_t rtgui_dc_buffer_fini(struct rtgui_dc* dc);
+static void rtgui_dc_buffer_draw_point(struct rtgui_dc* dc, int x, int y);
+static void rtgui_dc_buffer_draw_color_point(struct rtgui_dc* dc, int x, int y, rtgui_color_t color);
+static void rtgui_dc_buffer_draw_vline(struct rtgui_dc* dc, int x, int y1, int y2);
+static void rtgui_dc_buffer_draw_hline(struct rtgui_dc* dc, int x1, int x2, int y);
+static void rtgui_dc_buffer_fill_rect (struct rtgui_dc* dc, struct rtgui_rect* rect);
+static void rtgui_dc_buffer_blit_line(struct rtgui_dc* self, int x1, int x2, int y, rt_uint8_t* line_data);
+static void rtgui_dc_buffer_blit(struct rtgui_dc* self, struct rtgui_point* dc_point,
+	struct rtgui_dc* dest, rtgui_rect_t* rect);
+
+static void rtgui_dc_buffer_set_gc (struct rtgui_dc* dc, rtgui_gc_t *gc);
+static rtgui_gc_t* rtgui_dc_buffer_get_gc(struct rtgui_dc* dc);
+
+static rt_bool_t rtgui_dc_buffer_get_visible(struct rtgui_dc* dc);
+static void rtgui_dc_buffer_get_rect(struct rtgui_dc* dc, rtgui_rect_t* rect);
+
+const static struct rtgui_dc_engine dc_buffer_engine = 
+{
+	rtgui_dc_buffer_draw_point,
+	rtgui_dc_buffer_draw_color_point,
+	rtgui_dc_buffer_draw_vline,
+	rtgui_dc_buffer_draw_hline,
+	rtgui_dc_buffer_fill_rect,
+	rtgui_dc_buffer_blit_line,
+	rtgui_dc_buffer_blit,
+
+	rtgui_dc_buffer_set_gc,
+	rtgui_dc_buffer_get_gc,
+
+	rtgui_dc_buffer_get_visible,
+	rtgui_dc_buffer_get_rect,
+
+	rtgui_dc_buffer_fini,
+};
+
+struct rtgui_dc* rtgui_dc_buffer_create(int w, int h)
+{
+	struct rtgui_dc_buffer* dc;
+
+	dc = (struct rtgui_dc_buffer*)rtgui_malloc(sizeof(struct rtgui_dc_buffer));
+	dc->parent.type   = RTGUI_DC_BUFFER;
+	dc->parent.engine = &dc_buffer_engine;
+	dc->gc.foreground = default_foreground;
+	dc->gc.background = default_background;
+	dc->gc.font = rtgui_font_default();
+	dc->gc.textalign = RTGUI_ALIGN_LEFT | RTGUI_ALIGN_TOP;
+
+	dc->width	= w;
+	dc->height	= h;
+	dc->pitch	= w * sizeof(rtgui_color_t);
+
+	rtgui_region_init(&(dc->clip));
+
+	dc->pixel = rtgui_malloc(h * dc->pitch);
+	rt_memset(dc->pixel, 0, h * dc->pitch);
+
+	return &(dc->parent);
+}
+
+rt_uint8_t* rtgui_dc_buffer_get_pixel(struct rtgui_dc* dc)
+{
+	struct rtgui_dc_buffer* dc_buffer;
+
+	dc_buffer = (struct rtgui_dc_buffer*)dc;
+
+	return dc_buffer->pixel;
+}
+
+static rt_bool_t rtgui_dc_buffer_fini(struct rtgui_dc* dc)
+{
+	struct rtgui_dc_buffer* buffer = (struct rtgui_dc_buffer*)dc;
+
+	if (dc->type != RTGUI_DC_BUFFER) return RT_FALSE;
+
+	rtgui_free(buffer->pixel);
+	buffer->pixel = RT_NULL;
+
+	return RT_TRUE;
+}
+
+static void rtgui_dc_buffer_draw_point(struct rtgui_dc* self, int x, int y)
+{
+	rtgui_color_t* ptr;
+	struct rtgui_dc_buffer* dc;
+
+	dc = (struct rtgui_dc_buffer*)self;
+
+	/* note: there is no parameter check in this function */
+	ptr = (rtgui_color_t*)(dc->pixel + y * dc->pitch + x * sizeof(rtgui_color_t));
+
+	*ptr = dc->gc.foreground;
+}
+
+static void rtgui_dc_buffer_draw_color_point(struct rtgui_dc* self, int x, int y, rtgui_color_t color)
+{
+	rtgui_color_t* ptr;
+	struct rtgui_dc_buffer* dc;
+
+	dc = (struct rtgui_dc_buffer*)self;
+
+	/* note: there is no parameter check in this function */
+	ptr = (rtgui_color_t*)(dc->pixel + y * dc->pitch + x * sizeof(rtgui_color_t));
+
+	*ptr = color;
+}
+
+static void rtgui_dc_buffer_draw_vline(struct rtgui_dc* self, int x, int y1, int y2)
+{
+	rtgui_color_t* ptr;
+	register rt_base_t index;
+	struct rtgui_dc_buffer* dc;
+
+	dc = (struct rtgui_dc_buffer*)self;
+
+	if (x  >= dc->width) return;
+	if (y1 > dc->height) y1 = dc->height;
+	if (y2 > dc->height) y2 = dc->height;
+
+	ptr = (rtgui_color_t*)(dc->pixel + y1 * dc->pitch + x * sizeof(rtgui_color_t));
+	for (index = y1; index < y2; index ++)
+	{
+		/* draw this point */
+		*ptr = dc->gc.foreground;
+		ptr += dc->width;
+	}
+}
+
+static void rtgui_dc_buffer_draw_hline(struct rtgui_dc* self, int x1, int x2, int y)
+{
+	rtgui_color_t* ptr;
+	register rt_base_t index;
+	struct rtgui_dc_buffer* dc;
+
+	dc = (struct rtgui_dc_buffer*)self;
+	if (y >= dc->height) return;
+	if (x1 > dc->width) x1 = dc->width;
+	if (x2 > dc->width) x2 = dc->width;
+
+	ptr = (rtgui_color_t*)(dc->pixel + y * dc->pitch + x1 * sizeof(rtgui_color_t));
+	for (index = x1; index < x2; index ++)
+	{
+		/* draw this point */
+		*ptr++ = dc->gc.foreground;
+	}
+}
+
+static void rtgui_dc_buffer_fill_rect (struct rtgui_dc* self, struct rtgui_rect* rect)
+{
+	rtgui_rect_t r;
+	struct rtgui_dc_buffer* dc;
+
+	r = *rect;
+	dc = (struct rtgui_dc_buffer*)self;
+	if (r.x1 > dc->width) r.x1 = dc->width;
+	if (r.x2 > dc->width) r.x2 = dc->width;
+	if (r.y1 > dc->height) r.y1 = dc->height;
+	if (r.y2 > dc->height) r.y2 = dc->height;
+
+	/* fill first line */
+	rtgui_dc_buffer_draw_hline(&(dc->parent), r.x1, r.x2, r.y1);
+
+	/* memory copy other lines */
+	if (r.y2 > r.y1)
+	{
+		register rt_base_t index;
+		for (index = r.y1 + 1; index < r.y2; index ++)
+		{
+			rt_memcpy(dc->pixel + index * dc->pitch,
+				dc->pixel + r.y1 * dc->pitch,
+				(r.x2 - r.x1) * sizeof(rtgui_color_t));
+		}
+	}
+}
+
+/* blit a dc to a hardware dc */
+static void rtgui_dc_buffer_blit(struct rtgui_dc* self, struct rtgui_point* dc_point, struct rtgui_dc* dest, rtgui_rect_t* rect)
+{
+	struct rtgui_dc_buffer* dc = (struct rtgui_dc_buffer*)self;
+
+	if (dc_point == RT_NULL) dc_point = &rtgui_empty_point;
+	if (rtgui_dc_get_visible(dest) == RT_FALSE) return;
+
+	if ((dest->type == RTGUI_DC_HW) || (dest->type == RTGUI_DC_CLIENT))
+	{
+		rt_uint8_t *line_ptr, *pixels;
+		rt_uint16_t rect_width, rect_height, index, pitch;
+		rtgui_blit_line_func blit_line;
+
+		/* calculate correct width and height */
+		if (rtgui_rect_width(*rect) > (dc->width - dc_point->x))
+			rect_width = dc->width - dc_point->x;
+		else
+			rect_width = rtgui_rect_width(*rect);
+
+		if (rtgui_rect_height(*rect) > (dc->height - dc_point->y))
+			rect_height = dc->height - dc_point->y;
+		else
+			rect_height = rtgui_rect_height(*rect);
+
+		/* prepare pixel line */
+		pixels = dc->pixel + dc_point->y * dc->pitch + dc_point->x * sizeof(rtgui_color_t);
+
+		if (hw_driver->byte_per_pixel == sizeof(rtgui_color_t))
+		{
+			/* it's the same byte per pixel, draw it directly */
+			for (index = rect->y1; index < rect->y1 + rect_height; index++)
+			{
+				dest->engine->blit_line(dest, rect->x1, rect->x1 + rect_width, index, pixels);
+				pixels += dc->width * sizeof(rtgui_color_t);
+			}
+		}
+		else
+		{
+			/* get blit line function */
+			blit_line = rtgui_blit_line_get(hw_driver->byte_per_pixel, 4);
+			/* calculate pitch */
+			pitch = rect_width * sizeof(rtgui_color_t);
+			/* create line buffer */
+			line_ptr = (rt_uint8_t*) rtgui_malloc(rect_width * hw_driver->byte_per_pixel);
+
+			/* draw each line */
+			for (index = rect->y1; index < rect->y1 + rect_height; index ++)
+			{
+				/* blit on line buffer */
+				blit_line(line_ptr, (rt_uint8_t*)pixels, pitch);
+				pixels += dc->width * sizeof(rtgui_color_t);
+
+				/* draw on hardware dc */
+				dest->engine->blit_line(dest, rect->x1, rect->x1 + rect_width, index, line_ptr);
+			}
+
+			/* release line buffer */
+			rtgui_free(line_ptr);
+		}
+	}
+}
+
+static void rtgui_dc_buffer_blit_line(struct rtgui_dc* self, int x1, int x2, int y, rt_uint8_t* line_data)
+{
+	rtgui_color_t* color_ptr;
+	struct rtgui_dc_buffer* dc = (struct rtgui_dc_buffer*)self;
+
+	RT_ASSERT(dc != RT_NULL);
+	RT_ASSERT(line_data != RT_NULL);
+
+	/* out of range */
+	if ((x1 > dc->width) || (y > dc->height)) return;
+	/* check range */
+	if (x2 > dc->width) x2 = dc->width;
+
+	color_ptr = (rtgui_color_t*)(dc->pixel + y * dc->pitch + x1 * sizeof(rtgui_color_t));
+	rt_memcpy(color_ptr, line_data, (x2 - x1) * sizeof(rtgui_color_t));
+}
+
+static void rtgui_dc_buffer_set_gc(struct rtgui_dc* self, rtgui_gc_t *gc)
+{
+	struct rtgui_dc_buffer* dc = (struct rtgui_dc_buffer*)self;
+
+	dc->gc = *gc;
+}
+
+static rtgui_gc_t *rtgui_dc_buffer_get_gc(struct rtgui_dc* self)
+{
+	struct rtgui_dc_buffer* dc = (struct rtgui_dc_buffer*)self;
+
+	return &dc->gc;
+}
+
+static rt_bool_t rtgui_dc_buffer_get_visible(struct rtgui_dc* dc)
+{
+	return RT_TRUE;
+}
+
+static void rtgui_dc_buffer_get_rect(struct rtgui_dc* self, rtgui_rect_t* rect)
+{
+	struct rtgui_dc_buffer* dc = (struct rtgui_dc_buffer*)self;
+
+	rect->x1 = rect->y1 = 0;
+
+	rect->x2 = dc->width;
+	rect->y2 = dc->height;
+}
+