add RTGUI source code

git-svn-id: https://rt-thread.googlecode.com/svn/trunk@104 bbd45198-f89e-11dd-88c7-29a3b14d5316

1 files changed, 392 insertions, 0 deletions

diff --git a/rtgui/common/dc_buffer.c b/rtgui/common/dc_buffer.c
new file mode 100644
index 0000000000..a04fcb9c78
--- /dev/null
+++ b/rtgui/common/dc_buffer.c
@@ -0,0 +1,392 @@
+/*
+ * 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/color.h>
+#include <rtgui/rtgui_system.h>

+
+struct rtgui_dc_buffer
+{
+	struct rtgui_dc parent;
+
+	/* color and font */
+	rtgui_color_t color;
+	struct rtgui_font* font;
+	/* text align */
+	rt_int32_t align;
+
+	/* width and height */
+	rt_uint16_t width, height;
+	rt_uint16_t pitch;
+
+	/* blit info */
+	rt_uint32_t clip_sync;
+	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_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(struct rtgui_dc* self, struct rtgui_point* dc_point,
+	struct rtgui_dc* dest, rtgui_rect_t* rect);
+static void rtgui_dc_buffer_set_color (struct rtgui_dc* dc, rtgui_color_t color);
+static rtgui_color_t rtgui_dc_buffer_get_color(struct rtgui_dc* dc);
+static void rtgui_dc_buffer_set_font(struct rtgui_dc* dc, rtgui_font_t* font);
+static rtgui_font_t* rtgui_dc_buffer_get_font(struct rtgui_dc* dc);
+static void rtgui_dc_buffer_set_textalign(struct rtgui_dc* dc, rt_int32_t textalign);
+static rt_int32_t rtgui_dc_buffer_get_textalign(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);
+
+static void rtgui_dc_buffer_init(struct rtgui_dc_buffer* dc)
+{
+	if (dc == RT_NULL) return;
+
+	dc->parent.type = RTGUI_DC_BUFFER;
+	dc->parent.draw_point = rtgui_dc_buffer_draw_point;
+	dc->parent.draw_hline = rtgui_dc_buffer_draw_hline;
+	dc->parent.draw_vline = rtgui_dc_buffer_draw_vline;
+	dc->parent.fill_rect  = rtgui_dc_buffer_fill_rect;
+	dc->parent.blit		  = rtgui_dc_buffer_blit;
+
+	dc->parent.set_color  = rtgui_dc_buffer_set_color;
+	dc->parent.get_color  = rtgui_dc_buffer_get_color;
+
+	dc->parent.set_font	  = rtgui_dc_buffer_set_font;
+	dc->parent.get_font	  = rtgui_dc_buffer_get_font;
+	dc->parent.set_textalign  = rtgui_dc_buffer_set_textalign;
+	dc->parent.get_textalign  = rtgui_dc_buffer_get_textalign;
+
+	dc->parent.get_visible= rtgui_dc_buffer_get_visible;
+	dc->parent.get_rect	  = rtgui_dc_buffer_get_rect;
+
+	dc->parent.fini		  = 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));
+	rtgui_dc_buffer_init(dc);
+	dc->color	= 0;
+	dc->font	= RT_NULL;
+	dc->align	= 0;
+
+	dc->width	= w;
+	dc->height	= h;
+	dc->pitch	= w * sizeof(rtgui_color_t);
+
+	dc->clip_sync = 0;
+	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->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->color;
+		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->color;
+	}
+}
+
+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));
+		}
+	}
+}
+
+/* rtgui_color to RGB323 */
+rt_inline void rtgui_blit_line_1(rtgui_color_t* color, rt_uint8_t* dest, int line)
+{
+	struct _color {rt_uint8_t r, g, b, a;} *c;
+
+	c = (struct _color*)color;
+	while (line-- > 0)
+	{
+		*dest = (c->r & 0xe0) | (c->g & 0xc0) >> 3 | (c->b & 0xe0) >> 5 ;
+
+		c ++;
+		dest ++;
+	}
+}
+
+/* rtgui_color to RGB565 */
+rt_inline void rtgui_blit_line_2(rtgui_color_t* color, rt_uint8_t* dest, int line)
+{
+	struct _color {rt_uint8_t r, g, b, a;} *c;
+	rt_uint16_t* ptr;
+
+	c = (struct _color*)color;
+	ptr = (rt_uint16_t*)dest;
+
+	while (line-- > 0)
+	{
+		*ptr = ((c->r & 0xf8) << 8) | ((c->g & 0xfc) << 3) | (c->b >> 3);
+
+		c ++;
+		ptr ++;
+	}
+}
+
+/* rtgui_color to RGB888 */
+rt_inline void rtgui_blit_line_4(rtgui_color_t* color, rt_uint8_t* dest, int line)
+{
+	rt_memcpy(dest, color, line * 4);
+}
+
+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;
+	struct rtgui_dc_hw* hw = (struct rtgui_dc_hw*)dest;
+
+	if (dest->type == RTGUI_DC_HW)
+	{
+		register int index;
+		int fb_pitch;
+		rtgui_rect_t abs_rect;
+		void (*blit_line)(rtgui_color_t* color, rt_uint8_t* dest, int line);
+
+		abs_rect.x1 = hw->owner->extent.x1 + rect->x1;
+		abs_rect.y1 = hw->owner->extent.y1 + rect->y1;
+		abs_rect.x2 = abs_rect.x1 + rtgui_rect_width(*rect);
+		abs_rect.y2 = abs_rect.y1 + rtgui_rect_height(*rect);
+
+		/* hw fb pitch */
+		fb_pitch = hw->device->byte_per_pixel * hw->device->width;
+
+		/* hardware dc blit */
+		if (!rtgui_region_not_empty(&dc->clip) ||
+			dc->clip_sync != hw->owner->clip_sync)
+		{
+			/* should re-calculate clip */
+			rtgui_region_intersect_rect(&(dc->clip),
+				&(hw->owner->clip), &abs_rect);
+		}
+
+		switch (hw->device->byte_per_pixel)
+		{
+		case 1:
+			blit_line = rtgui_blit_line_1;
+			break;
+		case 2:
+			blit_line = rtgui_blit_line_2;
+			break;
+		case 3:
+			blit_line = rtgui_blit_line_4;
+			break;
+
+		default:
+			/* can not blit */
+			return;
+		}
+
+		/* blit each clip rect */
+		if (dc->clip.data == RT_NULL)
+		{
+			int y;
+			rtgui_color_t* pixel;
+			rt_uint8_t* fb;
+
+			pixel = (rtgui_color_t*)(dc->pixel + (dc_point->y + dc->clip.extents.y1 - abs_rect.y1) * dc->pitch +
+				(dc_point->x + dc->clip.extents.x1 - abs_rect.x1) * sizeof(rtgui_color_t));
+			fb = hw->device->get_framebuffer() + dc->clip.extents.y1 * fb_pitch +
+				dc->clip.extents.x1 * hw->device->byte_per_pixel;
+
+			for (y = dc->clip.extents.y1; y < dc->clip.extents.y2; y ++)
+			{
+				blit_line(pixel, fb, dc->clip.extents.x2 - dc->clip.extents.x1);
+
+				fb += fb_pitch;
+				pixel += dc->width;
+			}
+		}
+		else for (index = 0; index < rtgui_region_num_rects(&(dc->clip)); index ++)
+		{
+			int y;
+			rtgui_rect_t* prect;
+			rtgui_color_t* pixel;
+			rt_uint8_t* fb;
+
+			prect = ((rtgui_rect_t *)(dc->clip.data + index + 1));
+
+			pixel = (rtgui_color_t*)(dc->pixel + (dc_point->y + prect->y1 - abs_rect.y1) * dc->pitch +
+				(dc_point->x + prect->x1 - abs_rect.x1) * sizeof(rtgui_color_t));
+			fb = hw->device->get_framebuffer() + prect->y1 * fb_pitch +
+				prect->x1 * hw->device->byte_per_pixel;
+
+			for (y = prect->y1; y < prect->y2; y ++)
+			{
+				blit_line(pixel, fb, prect->x2 - prect->x1);
+
+				fb += fb_pitch;
+				pixel += dc->width;
+			}
+		}
+	}
+}
+
+static void rtgui_dc_buffer_set_color (struct rtgui_dc* self, rtgui_color_t color)
+{
+	struct rtgui_dc_buffer* dc = (struct rtgui_dc_buffer*)self;
+
+	dc->color = color;
+}
+
+static rtgui_color_t rtgui_dc_buffer_get_color(struct rtgui_dc* self)
+{
+	struct rtgui_dc_buffer* dc = (struct rtgui_dc_buffer*)self;
+
+	return dc->color;
+}
+
+static void rtgui_dc_buffer_set_font(struct rtgui_dc* self, rtgui_font_t* font)
+{
+	struct rtgui_dc_buffer* dc = (struct rtgui_dc_buffer*)self;
+
+	dc->font = font;
+}
+
+static rtgui_font_t* rtgui_dc_buffer_get_font(struct rtgui_dc* self)
+{
+	struct rtgui_dc_buffer* dc = (struct rtgui_dc_buffer*)self;
+
+	return dc->font;
+}
+
+static void rtgui_dc_buffer_set_textalign(struct rtgui_dc* self, rt_int32_t textalign)
+{
+	struct rtgui_dc_buffer* dc = (struct rtgui_dc_buffer*)self;
+
+	dc->align = textalign;
+}
+
+static rt_int32_t rtgui_dc_buffer_get_textalign(struct rtgui_dc* self)
+{
+	struct rtgui_dc_buffer* dc = (struct rtgui_dc_buffer*)self;
+
+	return dc->align;
+}
+
+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;
+}