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/*******************************************************************************************
*
* 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 (@raysan5)
*
********************************************************************************************/
#include "raylib.h"
#if defined(PLATFORM_WEB)
#include <emscripten/emscripten.h>
#endif
//----------------------------------------------------------------------------------
// Global Variables Definition
//----------------------------------------------------------------------------------
const int screenWidth = 800;
const int screenHeight = 450;
const char msg[50] = "TTF SpriteFont";
SpriteFont font;
float fontSize;
Vector2 fontPosition = { 40, screenHeight/2 + 50 };
Vector2 textSize;
int currentFontFilter = 0; // FILTER_POINT
#if !defined(PLATFORM_WEB)
int count = 0;
char **droppedFiles;
#endif
//----------------------------------------------------------------------------------
// Module Functions Declaration
//----------------------------------------------------------------------------------
void UpdateDrawFrame(void); // Update and Draw one frame
//----------------------------------------------------------------------------------
// Main Enry Point
//----------------------------------------------------------------------------------
int main()
{
// Initialization
//--------------------------------------------------------------------------------------
InitWindow(screenWidth, screenHeight, "raylib [text] example - ttf loading");
// NOTE: Textures/Fonts MUST be loaded after Window initialization (OpenGL context is required)
// TTF SpriteFont loading with custom generation parameters
font = LoadSpriteFontEx("resources/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);
fontSize = font.baseSize;
SetTextureFilter(font.texture, FILTER_POINT);
#if defined(PLATFORM_WEB)
emscripten_set_main_loop(UpdateDrawFrame, 0, 1);
#else
SetTargetFPS(60); // Set our game to run at 60 frames-per-second
//--------------------------------------------------------------------------------------
// Main game loop
while (!WindowShouldClose()) // Detect window close button or ESC key
{
UpdateDrawFrame();
}
#endif
// De-Initialization
//--------------------------------------------------------------------------------------
UnloadSpriteFont(font); // SpriteFont unloading
#if !defined(PLATFORM_WEB)
ClearDroppedFiles(); // Clear internal buffers
#endif
CloseWindow(); // Close window and OpenGL context
//--------------------------------------------------------------------------------------
return 0;
}
//----------------------------------------------------------------------------------
// Module Functions Definition
//----------------------------------------------------------------------------------
void UpdateDrawFrame(void)
{
// 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;
#if !defined(PLATFORM_WEB)
// 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 = LoadSpriteFontEx(droppedFiles[0], fontSize, 0, 0);
ClearDroppedFiles();
}
}
#endif
//----------------------------------------------------------------------------------
// 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();
//----------------------------------------------------------------------------------
}
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