raylib/examples/text/text_rectangle_bounds.c

/*******************************************************************************************
*
*   raylib [text] example - Draw text inside a rectangle
*
*   This example has been created using raylib 2.3 (www.raylib.com)
*   raylib is licensed under an unmodified zlib/libpng license (View raylib.h for details)
*
*   Example contributed by Vlad Adrian (@demizdor) and reviewed by Ramon Santamaria (@raysan5)
*
*   Copyright (c) 2018 Vlad Adrian (@demizdor) and Ramon Santamaria (@raysan5)
*
********************************************************************************************/

#include "raylib.h"

int main(void)
{
    // Initialization
    //--------------------------------------------------------------------------------------
    const int screenWidth = 800;
    const int screenHeight = 450;

    InitWindow(screenWidth, screenHeight, "raylib [text] example - draw text inside a rectangle");

    const char text[] = "Text cannot escape\tthis container\t...word wrap also works when active so here's \
a long text for testing.\n\nLorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod \
tempor incididunt ut labore et dolore magna aliqua. Nec ullamcorper sit amet risus nullam eget felis eget.";

    bool resizing = false;
    bool wordWrap = true;

    Rectangle container = { 25.0f, 25.0f, screenWidth - 50.0f, screenHeight - 250.0f };
    Rectangle resizer = { container.x + container.width - 17, container.y + container.height - 17, 14, 14 };

    // Minimum width and heigh for the container rectangle
    const float minWidth = 60;
    const float minHeight = 60;
    const float maxWidth = screenWidth - 50.0f;
    const float maxHeight = screenHeight - 160.0f;

    Vector2 lastMouse = { 0.0f, 0.0f }; // Stores last mouse coordinates
    Color borderColor = MAROON;         // Container border color
    Font font = GetFontDefault();       // Get default system font

    SetTargetFPS(60);                   // Set our game to run at 60 frames-per-second
    //--------------------------------------------------------------------------------------

    // Main game loop
    while (!WindowShouldClose())        // Detect window close button or ESC key
    {
        // Update
        //----------------------------------------------------------------------------------
        if (IsKeyPressed(KEY_SPACE)) wordWrap = !wordWrap;

        Vector2 mouse = GetMousePosition();

        // Check if the mouse is inside the container and toggle border color
        if (CheckCollisionPointRec(mouse, container)) borderColor = Fade(MAROON, 0.4f);
        else if (!resizing) borderColor = MAROON;

        // Container resizing logic
        if (resizing)
        {
            if (IsMouseButtonReleased(MOUSE_BUTTON_LEFT)) resizing = false;

            float width = container.width + (mouse.x - lastMouse.x);
            container.width = (width > minWidth)? ((width < maxWidth)? width : maxWidth) : minWidth;

            float height = container.height + (mouse.y - lastMouse.y);
            container.height = (height > minHeight)? ((height < maxHeight)? height : maxHeight) : minHeight;
        }
        else
        {
            // Check if we're resizing
            if (IsMouseButtonDown(MOUSE_BUTTON_LEFT) && CheckCollisionPointRec(mouse, resizer)) resizing = true;
        }

        // Move resizer rectangle properly
        resizer.x = container.x + container.width - 17;
        resizer.y = container.y + container.height - 17;

        lastMouse = mouse; // Update mouse
        //----------------------------------------------------------------------------------

        // Draw
        //----------------------------------------------------------------------------------
        BeginDrawing();

            ClearBackground(RAYWHITE);

            DrawRectangleLinesEx(container, 3, borderColor); // Draw container border

            // Draw text in container (add some padding)
            DrawTextRec(font, text,
                       (Rectangle){ container.x + 4, container.y + 4, container.width - 4, container.height - 4 },
                       20.0f, 2.0f, wordWrap, GRAY);

            DrawRectangleRec(resizer, borderColor);         // Draw the resize box

            // Draw bottom info
            DrawRectangle(0, screenHeight - 54, screenWidth, 54, GRAY);
            DrawRectangleRec((Rectangle){ 382.0f, screenHeight - 34.0f, 12.0f, 12.0f }, MAROON);

            DrawText("Word Wrap: ", 313, screenHeight-115, 20, BLACK);
            if (wordWrap) DrawText("ON", 447, screenHeight - 115, 20, RED);
            else DrawText("OFF", 447, screenHeight - 115, 20, BLACK);

            DrawText("Press [SPACE] to toggle word wrap", 218, screenHeight - 86, 20, GRAY);

            DrawText("Click hold & drag the    to resize the container", 155, screenHeight - 38, 20, RAYWHITE);

        EndDrawing();
        //----------------------------------------------------------------------------------
    }

    // De-Initialization
    //--------------------------------------------------------------------------------------
    CloseWindow();        // Close window and OpenGL context
    //--------------------------------------------------------------------------------------

    return 0;
}