version 0.3.00.3.0

1 files changed, 92 insertions, 0 deletions

diff --git a/libcore/cairoimage.c b/libcore/cairoimage.c
new file mode 100644
index 0000000..a8b56c3
--- /dev/null
+++ b/libcore/cairoimage.c
@@ -0,0 +1,92 @@
+#include "cairoimage.h"
+
+cCairoImage::cCairoImage(void) {
+    surface = NULL;
+    cr = NULL;
+}
+
+cCairoImage::~cCairoImage() {
+    if (cr)
+        cairo_destroy (cr);
+    if (surface)
+        cairo_surface_destroy (surface);
+}
+
+void cCairoImage::InitCairoImage(int width, int height) {
+    this->width = width;
+    this->height = height;
+    
+    surface = cairo_image_surface_create(CAIRO_FORMAT_ARGB32, width, height);
+    cr = cairo_create(surface);
+    cairo_set_antialias(cr, CAIRO_ANTIALIAS_BEST);
+}
+
+void cCairoImage::DrawTextVertical(string text, tColor color, string font, int size) {
+
+    int imgHeight = GetTextWidth(text, font, size);
+    InitCairoImage(size * 1.2, imgHeight);
+
+    SetColor(color);
+    cairo_move_to (cr, size, imgHeight);
+    cairo_font_weight_t fontWeight = CAIRO_FONT_WEIGHT_NORMAL;
+    cairo_font_slant_t fontSlant = CAIRO_FONT_SLANT_NORMAL;
+    cairo_select_font_face (cr, font.c_str(), fontSlant, fontWeight);
+    cairo_set_font_size (cr, size);
+    cairo_rotate(cr, 3*M_PI/2);
+    cairo_show_text (cr, text.c_str());
+}
+
+cImage *cCairoImage::GetImage(void) {
+    if (!cr || !surface)
+       return NULL;
+
+    unsigned char *data = cairo_image_surface_get_data(surface);
+    cImage *image = new cImage(cSize(width, height), (tColor*)data);
+    return image;
+}
+
+/**********************************************************************************
+* Private Functions
+**********************************************************************************/
+
+int cCairoImage::GetTextWidth(string text, string font, int size) {
+    cairo_surface_t *tmpSurface;
+    cairo_t *tmpCr;
+
+    double width = 300;
+    double height = (double)size *1.3;
+
+    cairo_font_weight_t fontWeight = CAIRO_FONT_WEIGHT_NORMAL;
+    cairo_font_slant_t fontSlant = CAIRO_FONT_SLANT_NORMAL;
+
+    tmpSurface = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, width, height);
+    tmpCr = cairo_create (tmpSurface);
+
+    cairo_select_font_face (tmpCr, font.c_str(), fontSlant, fontWeight);
+    cairo_set_font_size (tmpCr, size);
+    
+    cairo_text_extents_t te;
+    cairo_text_extents (tmpCr, text.c_str(), &te);
+    int textWidth = te.width;
+
+    cairo_destroy (tmpCr);
+    cairo_surface_destroy (tmpSurface);
+
+    return (double)textWidth * 1.1;
+}
+
+void cCairoImage::SetColor(tColor color) {
+    if (!cr || !surface)
+        return;
+    tIndex tAlpha = (color & 0xFF000000) >> 24;
+    tIndex tRed = (color & 0x00FF0000) >> 16;
+    tIndex tGreen = (color & 0x0000FF00) >> 8;
+    tIndex tBlue = (color & 0x000000FF);
+
+    double a = (int)tAlpha / (double)255;
+    double r = (int)tRed / (double)255;
+    double g = (int)tGreen / (double)255;
+    double b = (int)tBlue / (double)255;
+
+    cairo_set_source_rgba(cr, r, g, b, a);
+}
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