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REXM: RENAMED: core_high_dpi --> core_highdpi_demo

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2025-12-20 22:36:44 +01:00
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examples/core/core_highdpi_demo.c Normal file
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/*******************************************************************************************
*
* raylib [core] example - highdpi demo
*
* Example complexity rating: [★★☆☆] 2/4
*
* Example originally created with raylib 5.0, last time updated with raylib 5.5
*
* Example contributed by Jonathan Marler (@marler8997) 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) 2025 Jonathan Marler (@marler8997)
*
********************************************************************************************/
#include "raylib.h"
//------------------------------------------------------------------------------------
// Module Functions Declaration
//------------------------------------------------------------------------------------
static void DrawTextCenter(const char *text, int x, int y, int fontSize, Color color);
//------------------------------------------------------------------------------------
// Program main entry point
//------------------------------------------------------------------------------------
int main(void)
{
// Initialization
//--------------------------------------------------------------------------------------
const int screenWidth = 800;
const int screenHeight = 450;
SetConfigFlags(FLAG_WINDOW_HIGHDPI | FLAG_WINDOW_RESIZABLE);
InitWindow(screenWidth, screenHeight, "raylib [core] example - highdpi demo");
SetWindowMinSize(450, 450);
int logicalGridDescY = 120;
int logicalGridLabelY = logicalGridDescY + 30;
int logicalGridTop = logicalGridLabelY + 30;
int logicalGridBottom = logicalGridTop + 80;
int pixelGridTop = logicalGridBottom - 20;
int pixelGridBottom = pixelGridTop + 80;
int pixelGridLabelY = pixelGridBottom + 30;
int pixelGridDescY = pixelGridLabelY + 30;
int cellSize = 50;
float cellSizePx = (float)cellSize;
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
//----------------------------------------------------------------------------------
int monitorCount = GetMonitorCount();
if ((monitorCount > 1) && IsKeyPressed(KEY_N))
{
SetWindowMonitor((GetCurrentMonitor() + 1)%monitorCount);
}
int currentMonitor = GetCurrentMonitor();
Vector2 dpiScale = GetWindowScaleDPI();
cellSizePx = ((float)cellSize)/dpiScale.x;
//----------------------------------------------------------------------------------
// Draw
//----------------------------------------------------------------------------------
BeginDrawing();
ClearBackground(RAYWHITE);
int windowCenter = GetScreenWidth()/2;
DrawTextCenter(TextFormat("Dpi Scale: %f", dpiScale.x), windowCenter, 30, 40, DARKGRAY);
DrawTextCenter(TextFormat("Monitor: %d/%d ([N] next monitor)", currentMonitor+1, monitorCount), windowCenter, 70, 20, LIGHTGRAY);
DrawTextCenter(TextFormat("Window is %d \"logical points\" wide", GetScreenWidth()), windowCenter, logicalGridDescY, 20, ORANGE);
bool odd = true;
for (int i = cellSize; i < GetScreenWidth(); i += cellSize, odd = !odd)
{
if (odd) DrawRectangle(i, logicalGridTop, cellSize, logicalGridBottom-logicalGridTop, ORANGE);
DrawTextCenter(TextFormat("%d", i), i, logicalGridLabelY, 10, LIGHTGRAY);
DrawLine(i, logicalGridLabelY + 10, i, logicalGridBottom, GRAY);
}
odd = true;
const int minTextSpace = 30;
int lastTextX = -minTextSpace;
for (int i = cellSize; i < GetRenderWidth(); i += cellSize, odd = !odd)
{
int x = (int)(((float)i)/dpiScale.x);
if (odd) DrawRectangle(x, pixelGridTop, (int)cellSizePx, pixelGridBottom - pixelGridTop, CLITERAL(Color){ 0, 121, 241, 100 });
DrawLine(x, pixelGridTop, (int)(((float)i)/dpiScale.x), pixelGridLabelY - 10, GRAY);
if ((x - lastTextX) >= minTextSpace)
{
DrawTextCenter(TextFormat("%d", i), x, pixelGridLabelY, 10, LIGHTGRAY);
lastTextX = x;
}
}
DrawTextCenter(TextFormat("Window is %d \"physical pixels\" wide", GetRenderWidth()), windowCenter, pixelGridDescY, 20, BLUE);
const char *text = "Can you see this?";
Vector2 size = MeasureTextEx(GetFontDefault(), text, 20, 3);
Vector2 pos = (Vector2){ GetScreenWidth() - size.x - 5, GetScreenHeight() - size.y - 5 };
DrawTextEx(GetFontDefault(), text, pos, 20, 3, LIGHTGRAY);
EndDrawing();
//----------------------------------------------------------------------------------
}
// De-Initialization
//--------------------------------------------------------------------------------------
CloseWindow(); // Close window and OpenGL context
//--------------------------------------------------------------------------------------
return 0;
}
//------------------------------------------------------------------------------------
// Module Functions Definition
//------------------------------------------------------------------------------------
static void DrawTextCenter(const char *text, int x, int y, int fontSize, Color color)
{
Vector2 size = MeasureTextEx(GetFontDefault(), text, (float)fontSize, 3);
Vector2 pos = (Vector2){ x - size.x/2, y - size.y/2 };
DrawTextEx(GetFontDefault(), text, pos, (float)fontSize, 3, color);
}