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/******************************************************************************************* |
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* |
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* raylib [text] example - text alignment |
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* |
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* Example complexity rating: [★☆☆☆] 1/4 |
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* |
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* Example originally created with raylib 5.0, last time updated with raylib 5.5 |
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* |
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* Example contributed by JP Mortiboys (@themushroompirates) and reviewed by Ramon Santamaria (@raysan5) |
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* |
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* Example licensed under an unmodified zlib/libpng license, which is an OSI-certified, |
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* BSD-like license that allows static linking with closed source software |
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* |
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* Copyright (c) 2025 JP Mortiboys (@themushroompirates) |
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* |
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********************************************************************************************/ |
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#include "raylib.h" |
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#include "raymath.h" // Required for: Lerp() |
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typedef enum TextAlignment { |
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TEXT_ALIGN_LEFT = 0, |
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TEXT_ALIGN_TOP = 0, |
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TEXT_ALIGN_CENTRE = 1, |
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TEXT_ALIGN_MIDDLE = 1, |
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TEXT_ALIGN_RIGHT = 2, |
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TEXT_ALIGN_BOTTOM = 2 |
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} TextAlignment; |
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//------------------------------------------------------------------------------------ |
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// Program main entry point |
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//------------------------------------------------------------------------------------ |
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int main(void) |
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{ |
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// Initialization |
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//-------------------------------------------------------------------------------------- |
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const int screenWidth = 800; |
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const int screenHeight = 450; |
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InitWindow(screenWidth, screenHeight, "raylib [text] example - text alignment"); |
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// Define the rectangle we will draw the text in |
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Rectangle textContainerRect = (Rectangle){ screenWidth/2-screenWidth/4, screenHeight/2-screenHeight/3, screenWidth/2, screenHeight*2/3 }; |
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// Some text to display the current alignment |
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const char *textAlignNameH[] = { "Left", "Centre", "Right" }; |
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const char *textAlignNameV[] = { "Top", "Middle", "Bottom" }; |
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// Define the text we're going to draw in the rectangle |
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int wordIndex = 0; |
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int wordCount = 0; |
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char **words = TextSplit("raylib is a simple and easy-to-use library to enjoy videogames programming", ' ', &wordCount); |
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// Initialize the font size we're going to use |
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int fontSize = 40; |
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// And of course the font... |
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Font font = GetFontDefault(); |
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// Intialize the alignment variables |
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TextAlignment hAlign = TEXT_ALIGN_CENTRE; |
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TextAlignment vAlign = TEXT_ALIGN_MIDDLE; |
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SetTargetFPS(60); // Set our game to run at 60 frames-per-second |
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//-------------------------------------------------------------------------------------- |
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// Main game loop |
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while (!WindowShouldClose()) // Detect window close button or ESC key |
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{ |
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// Update |
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//---------------------------------------------------------------------------------- |
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if (IsKeyPressed(KEY_LEFT)) { |
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hAlign = hAlign - 1; |
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if (hAlign < 0) hAlign = 0; |
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} |
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if (IsKeyPressed(KEY_RIGHT)) { |
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hAlign = hAlign + 1; |
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if (hAlign > 2) hAlign = 2; |
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} |
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if (IsKeyPressed(KEY_UP)) { |
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vAlign = vAlign - 1; |
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if (vAlign < 0) vAlign = 0; |
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} |
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if (IsKeyPressed(KEY_DOWN)) { |
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vAlign = vAlign + 1; |
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if (vAlign > 2) vAlign = 2; |
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} |
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// One word per second |
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wordIndex = (int)GetTime() % wordCount; |
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//---------------------------------------------------------------------------------- |
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// Draw |
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//---------------------------------------------------------------------------------- |
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BeginDrawing(); |
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ClearBackground(DARKBLUE); |
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DrawText("Use Arrow Keys to change the text alignment", 20, 20, 20, LIGHTGRAY); |
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DrawText(TextFormat("Alignment: Horizontal = %s, Vertical = %s", textAlignNameH[hAlign], textAlignNameV[vAlign]), 20, 40, 20, LIGHTGRAY); |
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DrawRectangleRec(textContainerRect, BLUE); |
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// Get the size of the text to draw |
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Vector2 textSize = MeasureTextEx(font, words[wordIndex], fontSize, fontSize*.1f); |
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// Calculate the top-left text position based on the rectangle and alignment |
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Vector2 textPos = (Vector2) { |
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textContainerRect.x + Lerp(0.0f, textContainerRect.width - textSize.x, ((float)hAlign) * 0.5f), |
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textContainerRect.y + Lerp(0.0f, textContainerRect.height - textSize.y, ((float)vAlign) * 0.5f) |
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}; |
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// Draw the text |
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DrawTextEx(font, words[wordIndex], textPos, fontSize, fontSize*.1f, RAYWHITE); |
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EndDrawing(); |
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//---------------------------------------------------------------------------------- |
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} |
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// De-Initialization |
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//-------------------------------------------------------------------------------------- |
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CloseWindow(); // Close window and OpenGL context |
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//-------------------------------------------------------------------------------------- |
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return 0; |
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} |