diff --git a/examples/text/text_backspace_input.c b/examples/text/text_backspace_input.c new file mode 100644 index 000000000..eef543d74 --- /dev/null +++ b/examples/text/text_backspace_input.c @@ -0,0 +1,177 @@ +/* + WELCOME raylib EXAMPLES CONTRIBUTOR! + + This is a basic template to anyone ready to contribute with some code example for the library, + here there are some guidelines on how to create an example to be included in raylib + + 1. File naming: _ - Lower case filename, words separated by underscore, + no more than 3-4 words in total to describe the example. referes to the primary + raylib module the example is more related with (code, shapes, textures, models, shaders, raudio). + i.e: core_input_multitouch, shapes_lines_bezier, shaders_palette_switch + + 2. Follow below template structure, example info should list the module, the short description + and the author of the example, twitter or github info could be also provided for the author. + Short description should also be used on the title of the window. + + 3. Code should be organized by sections:[Initialization]- [Update] - [Draw] - [De-Initialization] + Place your code between the dotted lines for every section, please don't mix update logic with drawing + and remember to unload all loaded resources. + + 4. Code should follow raylib conventions: https://github.com/raysan5/raylib/wiki/raylib-coding-conventions + Try to be very organized, using line-breaks appropiately. + + 5. Add comments to the specific parts of code the example is focus on. + Don't abuse with comments, try to be clear and impersonal on the comments. + + 6. Try to keep the example simple, under 300 code lines if possible. Try to avoid external dependencies. + Try to avoid defining functions outside the main(). Example should be as self-contained as possible. + + 7. About external resources, they should be placed in a [resources] folder and those resources + should be open and free for use and distribution. Avoid propietary content. + + 8. Try to keep the example simple but with a creative touch. + Simple but beautiful examples are more appealing to users! + + 9. In case of additional information is required, just come to raylib Discord channel: example-contributions + + 10. Have fun! + + The following files should be updated when adding a new example, it's planned to create some + script to automatize this process but not available yet. + + - raylib/examples//_example_name.c + - raylib/examples//_example_name.png + - raylib/examples//resources/*.* + - raylib/examples/Makefile + - raylib/examples/Makefile.Web + - raylib/examples/README.md + - raylib/projects/VS2022/examples/_example_name.vcxproj + - raylib/projects/VS2022/raylib.sln + - raylib.com/common/examples.js + - raylib.com/examples//_example_name.html + - raylib.com/examples//_example_name.data + - raylib.com/examples//_example_name.wasm + - raylib.com/examples//_example_name.js +*/ + +/******************************************************************************************* +* +* raylib [core] example - Backspace input +* +* Example originally created with raylib 5.0, last time updated with raylib 5.0 +* +* Example contributed by benevo (@benev0) and reviewed by Ramon Santamaria (@raysan5) +* +* Example licensed under an unmodified zlib/libpng license, which is an OSI-certified, +* BSD-like license that allows static linking with closed source software +* +* Copyright (c) 2023 benevo (@benev0) +* +********************************************************************************************/ + +#include "raylib.h" + +#define MAX_INPUT_CHARS 40 + + +bool isKeyChar(int); + +//------------------------------------------------------------------------------------ +// Program main entry point +//------------------------------------------------------------------------------------ +int main(void) +{ + // Initialization + //-------------------------------------------------------------------------------------- + const int screenWidth = 800; + const int screenHeight = 450; + + InitWindow(screenWidth, screenHeight, "raylib [text] example - backspace input"); + + char textField[MAX_INPUT_CHARS + 1] = "\0"; + int usedSize = 0; + + SetTargetFPS(1); + //-------------------------------------------------------------------------------------- + + // Main game loop + while (!WindowShouldClose()) // Detect window close button or ESC key + { + // Update + //---------------------------------------------------------------------------------- + + int letter = GetCharPressed(); + int key = GetKeyPressed(); + + if(key) + printf("%d, %d\n", letter, key); + + while (key > 0 || letter > 0) + { + + if (key == KEY_BACKSPACE && usedSize > 0) + { + textField[usedSize - 1] = 0; + usedSize--; + key = GetKeyPressed(); + } + else if (!isKeyChar(key)) + { + key = GetKeyPressed(); + } + else if ((letter > 0) && (letter >= 32) && (letter <= 125) && (usedSize < MAX_INPUT_CHARS)) + { + textField[usedSize] = (char) letter; + textField[usedSize + 1] = 0; + usedSize++; + letter = GetCharPressed(); + key = GetKeyPressed(); + } + else + { + letter = GetCharPressed(); + key = GetKeyPressed(); + } + } + + + // Draw + //---------------------------------------------------------------------------------- + BeginDrawing(); + + ClearBackground(RAYWHITE); + + // TODO: Draw everything that requires to be drawn at this point: + + DrawText(textField, 40, 200, 20, BLACK); // Example + + EndDrawing(); + //---------------------------------------------------------------------------------- + } + + // De-Initialization + //-------------------------------------------------------------------------------------- + + CloseWindow(); // Close window and OpenGL context + //-------------------------------------------------------------------------------------- + + return 0; +} + +bool isKeyChar(int key) +{ + switch (key) + { + case KEY_SPACE: + case KEY_APOSTROPHE: + case KEY_COMMA...KEY_NINE: + case KEY_SEMICOLON: + case KEY_EQUAL: + case KEY_A...KEY_Z: + case KEY_LEFT_BRACKET...KEY_RIGHT_BRACKET: + case KEY_GRAVE: + return true; + default: + return false; + } +}