/** 绘制文本 */
int TextLayer_Draw( LCUI_TextLayer* layer )
{
LCUI_Rect rect;
/* 如果文本位图缓存无效 */
if( layer->is_using_buffer && !Graph_IsValid( &layer->graph ) ) {
return -1;
}
rect.x = 0;
rect.y = 0;
rect.w = layer->max_width;
rect.h = layer->max_height;
return TextLayer_DrawToGraph( layer, rect, Pos(0,0), &layer->graph );
}
int test_string_render( void )
{
int ret;
LCUI_Graph img;
LCUI_Pos pos = {0, 80};
LCUI_Rect area = {0, 0, 320, 240};
LCUI_TextLayer txt = TextLayer_New();
LCUI_TextStyleRec txtstyle;
/* 初始化字体处理功能 */
LCUI_InitFontLibrary();
/* 创建一个图像，并使用灰色填充 */
Graph_Init( &img );
Graph_Create( &img, 320, 240 );
Graph_FillRect( &img, RGB( 240, 240, 240 ), NULL, FALSE );
/* 设置文本的字体大小 */
TextStyle_Init( &txtstyle );
txtstyle.pixel_size = 24;
txtstyle.has_pixel_size = TRUE;
/* 设置文本图层的固定尺寸、文本样式、文本内容、对齐方式 */
TextLayer_SetFixedSize( txt, 320, 240 );
TextLayer_SetTextStyle( txt, &txtstyle );
TextLayer_SetTextAlign( txt, SV_CENTER );
TextLayer_SetTextW( txt, L"这是一段测试文本\nHello, World!", NULL );
TextLayer_Update( txt, NULL );
/* 将文本图层绘制到图像中，然后将图像写入至 png 文件中 */
TextLayer_DrawToGraph( txt, area, pos, &img );
ret = LCUI_WritePNGFile( "test_string_render.png", &img );
Graph_Free( &img );
/* 释放字体处理功能相关资源 */
LCUI_FreeFontLibrary();
return ret;
}
