Merge pull request #223 from raysan5/develop

Integrate develop branch into master

1 files changed, 130 insertions, 0 deletions

diff --git a/docs/examples/src/text_ttf_loading.c b/docs/examples/src/text_ttf_loading.c
new file mode 100644
index 00000000..918209dd
--- /dev/null
+++ b/docs/examples/src/text_ttf_loading.c
@@ -0,0 +1,130 @@
+/*******************************************************************************************
+*
+*   raylib [text] example - TTF loading and usage
+*
+*   This example has been created using raylib 1.3.0 (www.raylib.com)
+*   raylib is licensed under an unmodified zlib/libpng license (View raylib.h for details)
+*
+*   Copyright (c) 2015 Ramon Santamaria (Ray San - raysan@raysanweb.com)
+*
+********************************************************************************************/
+
+#include "raylib.h"
+
+int main()
+{
+    // Initialization
+    //--------------------------------------------------------------------------------------
+    int screenWidth = 800;
+    int screenHeight = 450;
+
+    InitWindow(screenWidth, screenHeight, "raylib [text] example - ttf loading");
+    
+    const char msg[50] = "TTF SpriteFont";
+
+    // NOTE: Textures/Fonts MUST be loaded after Window initialization (OpenGL context is required)
+    
+    // TTF SpriteFont loading with custom generation parameters
+    SpriteFont font = LoadSpriteFontTTF("resources/fonts/KAISG.ttf", 96, 0, 0);
+    
+    // Generate mipmap levels to use trilinear filtering
+    // NOTE: On 2D drawing it won't be noticeable, it looks like FILTER_BILINEAR
+    GenTextureMipmaps(&font.texture);
+
+    float fontSize = font.size;
+    Vector2 fontPosition = { 40, screenHeight/2 + 50 };
+    Vector2 textSize;
+
+    SetTextureFilter(font.texture, FILTER_POINT);
+    int currentFontFilter = 0;      // FILTER_POINT
+    
+    int count = 0;
+    char **droppedFiles;
+    
+    SetTargetFPS(60);
+    //--------------------------------------------------------------------------------------
+    
+    // Main game loop
+    while (!WindowShouldClose())    // Detect window close button or ESC key
+    {
+        // Update
+        //----------------------------------------------------------------------------------
+        fontSize += GetMouseWheelMove()*4.0f;
+        
+        // Choose font texture filter method
+        if (IsKeyPressed(KEY_ONE))
+        {
+            SetTextureFilter(font.texture, FILTER_POINT);
+            currentFontFilter = 0;
+        }
+        else if (IsKeyPressed(KEY_TWO))
+        {
+            SetTextureFilter(font.texture, FILTER_BILINEAR);
+            currentFontFilter = 1;
+        }
+        else if (IsKeyPressed(KEY_THREE))
+        {
+            // NOTE: Trilinear filter won't be noticed on 2D drawing
+            SetTextureFilter(font.texture, FILTER_TRILINEAR);
+            currentFontFilter = 2;
+        }
+        
+        textSize = MeasureTextEx(font, msg, fontSize, 0);
+        
+        if (IsKeyDown(KEY_LEFT)) fontPosition.x -= 10;
+        else if (IsKeyDown(KEY_RIGHT)) fontPosition.x += 10;
+        
+        // Load a dropped TTF file dynamically (at current fontSize)
+        if (IsFileDropped())
+        {
+            droppedFiles = GetDroppedFiles(&count);
+            
+            if (count == 1) // Only support one ttf file dropped
+            {
+                UnloadSpriteFont(font);
+                font = LoadSpriteFontTTF(droppedFiles[0], fontSize, 0, 0);
+                ClearDroppedFiles();
+            }
+        }
+        //----------------------------------------------------------------------------------
+        
+        // Draw
+        //----------------------------------------------------------------------------------
+        BeginDrawing();
+        
+            ClearBackground(RAYWHITE);
+            
+            DrawText("Use mouse wheel to change font size", 20, 20, 10, GRAY);
+            DrawText("Use KEY_RIGHT and KEY_LEFT to move text", 20, 40, 10, GRAY);
+            DrawText("Use 1, 2, 3 to change texture filter", 20, 60, 10, GRAY);
+            DrawText("Drop a new TTF font for dynamic loading", 20, 80, 10, DARKGRAY);
+
+            DrawTextEx(font, msg, fontPosition, fontSize, 0, BLACK);
+            
+            // TODO: It seems texSize measurement is not accurate due to chars offsets...
+            //DrawRectangleLines(fontPosition.x, fontPosition.y, textSize.x, textSize.y, RED);
+            
+            DrawRectangle(0, screenHeight - 80, screenWidth, 80, LIGHTGRAY);
+            DrawText(FormatText("Font size: %02.02f", fontSize), 20, screenHeight - 50, 10, DARKGRAY);
+            DrawText(FormatText("Text size: [%02.02f, %02.02f]", textSize.x, textSize.y), 20, screenHeight - 30, 10, DARKGRAY);
+            DrawText("CURRENT TEXTURE FILTER:", 250, 400, 20, GRAY);
+            
+            if (currentFontFilter == 0) DrawText("POINT", 570, 400, 20, BLACK);
+            else if (currentFontFilter == 1) DrawText("BILINEAR", 570, 400, 20, BLACK);
+            else if (currentFontFilter == 2) DrawText("TRILINEAR", 570, 400, 20, BLACK);
+      
+        EndDrawing();
+        //----------------------------------------------------------------------------------
+    }
+
+    // De-Initialization
+    //--------------------------------------------------------------------------------------
+    UnloadSpriteFont(font);     // SpriteFont unloading
+    
+    ClearDroppedFiles();        // Clear internal buffers
+
+    CloseWindow();              // Close window and OpenGL context
+    //--------------------------------------------------------------------------------------
+    
+    return 0;
+}
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