Move text to a separate file

1 files changed, 37 insertions, 0 deletions

diff --git a/src/graphics/text.cpp b/src/graphics/text.cpp
new file mode 100644
index 0000000..82b8811
--- /dev/null
+++ b/src/graphics/text.cpp
@@ -0,0 +1,37 @@
+#include "text.h"
+
+using namespace Graphics;
+
+Text::Text(TextureFont &font, const std::string &text)
+    : font_(font)
+    , text_(text)
+    , vertices_(sf::Quads, text.size()*4)
+{
+    unsigned int length = vertices_.getVertexCount();
+    sf::Vector2f glyphSize = font_.getGlyphSize();
+    // TODO: this is the simplest rendering way: everything in one line
+    //       we should improve this to make it handle newlines or max witdths
+    for(unsigned int i=0; i < length; i=i+4){
+        vertices_[i+0].position = sf::Vector2f(glyphSize.x * i/4,       0);
+        vertices_[i+1].position = sf::Vector2f(glyphSize.x * (i/4 + 1), 0);
+        vertices_[i+2].position = sf::Vector2f(glyphSize.x * (i/4 + 1), glyphSize.y);
+        vertices_[i+3].position = sf::Vector2f(glyphSize.x * i/4,       glyphSize.y);
+
+        std::array<sf::Vector2f, 4> glyph = font_.getGlyphMapping(text_[i/4]);
+
+        vertices_[i+0].texCoords = glyph[0];
+        vertices_[i+1].texCoords = glyph[1];
+        vertices_[i+2].texCoords = glyph[2];
+        vertices_[i+3].texCoords = glyph[3];
+    }
+}
+
+void Text::draw(sf::RenderTarget& target, sf::RenderStates states) const
+{
+    // TODO: only repaint if needed: when repainting is needed
+    // vertices_.clear() and fun
+    states.transform *= getTransform();
+    states.texture = font_.getTexture();
+    // you may also override states.shader or states.blendMode if you want
+    target.draw(vertices_, states);
+}