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132 řádky
4.8 KiB
132 řádky
4.8 KiB
/*******************************************************************************************
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*
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* raylib [text] example - Input Box
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*
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* Example originally created with raylib 1.7, last time updated with raylib 3.5
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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) 2017-2024 Ramon Santamaria (@raysan5)
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*
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********************************************************************************************/
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#include "raylib.h"
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#define MAX_INPUT_CHARS 9
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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 - input box");
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char name[MAX_INPUT_CHARS + 1] = "\0"; // NOTE: One extra space required for null terminator char '\0'
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int letterCount = 0;
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Rectangle textBox = { screenWidth/2.0f - 100, 180, 225, 50 };
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bool mouseOnText = false;
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int framesCounter = 0;
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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 (CheckCollisionPointRec(GetMousePosition(), textBox)) mouseOnText = true;
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else mouseOnText = false;
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if (mouseOnText)
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{
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// Set the window's cursor to the I-Beam
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SetMouseCursor(MOUSE_CURSOR_IBEAM);
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// Get char pressed (unicode character) on the queue
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int key = GetCharPressed();
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// Check if more characters have been pressed on the same frame
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while (key > 0)
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{
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// NOTE: Only allow keys in range [32..125]
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if ((key >= 32) && (key <= 125) && (letterCount < MAX_INPUT_CHARS))
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{
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name[letterCount] = (char)key;
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name[letterCount+1] = '\0'; // Add null terminator at the end of the string.
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letterCount++;
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}
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key = GetCharPressed(); // Check next character in the queue
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}
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if (IsKeyPressed(KEY_BACKSPACE))
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{
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letterCount--;
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if (letterCount < 0) letterCount = 0;
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name[letterCount] = '\0';
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}
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}
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else SetMouseCursor(MOUSE_CURSOR_DEFAULT);
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if (mouseOnText) framesCounter++;
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else framesCounter = 0;
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//----------------------------------------------------------------------------------
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// Draw
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//----------------------------------------------------------------------------------
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BeginDrawing();
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ClearBackground(RAYWHITE);
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DrawText("PLACE MOUSE OVER INPUT BOX!", 240, 140, 20, GRAY);
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DrawRectangleRec(textBox, LIGHTGRAY);
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if (mouseOnText) DrawRectangleLines((int)textBox.x, (int)textBox.y, (int)textBox.width, (int)textBox.height, RED);
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else DrawRectangleLines((int)textBox.x, (int)textBox.y, (int)textBox.width, (int)textBox.height, DARKGRAY);
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DrawText(name, (int)textBox.x + 5, (int)textBox.y + 8, 40, MAROON);
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DrawText(TextFormat("INPUT CHARS: %i/%i", letterCount, MAX_INPUT_CHARS), 315, 250, 20, DARKGRAY);
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if (mouseOnText)
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{
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if (letterCount < MAX_INPUT_CHARS)
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{
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// Draw blinking underscore char
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if (((framesCounter/20)%2) == 0) DrawText("_", (int)textBox.x + 8 + MeasureText(name, 40), (int)textBox.y + 12, 40, MAROON);
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}
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else DrawText("Press BACKSPACE to delete chars...", 230, 300, 20, GRAY);
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}
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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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}
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// Check if any key is pressed
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// NOTE: We limit keys check to keys between 32 (KEY_SPACE) and 126
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bool IsAnyKeyPressed()
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{
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bool keyPressed = false;
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int key = GetKeyPressed();
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if ((key >= 32) && (key <= 126)) keyPressed = true;
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return keyPressed;
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}
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