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example demonstrating a problem

test.c (text/plain), 3.23 KB, created by Alexander Maltsev on 2019-08-20 04:31:26 UTC

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Description:

Filename:

MIME Type:

Creator: Alexander Maltsev

Created: 2019-08-20 04:31:26 UTC

Size: 3.23 KB

patch

obsolete

>#include <stdio.h>
>#include <SDL2/SDL.h>
>#include <SDL2/SDL_ttf.h>
>
>// path to fonts location
>#define TTF_FONT_PATH(file) "C:\\Windows\\Fonts\\"file
>
>int main( int argc, char *argv[] )
>{
>    int SCREEN_WIDTH = 800;
>    int SCREEN_HEIGHT = 600;
>
>    // setup window and renderer
>    SDL_Window *window = NULL;
>    SDL_Renderer *renderer = NULL;
>
>    if(SDL_Init(SDL_INIT_VIDEO) < 0)
>    {
>        SDL_Log("SDL could not initialize! SDL Error: %s\n", SDL_GetError());
>    }
>
>    if(TTF_Init() < 0)
>    {
>        SDL_Log("Unable to initialize SDL TTF: %s", SDL_GetError());
>        return 1;
>    }
>
>    window = SDL_CreateWindow("SDL Test", SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED, SCREEN_WIDTH, SCREEN_HEIGHT, SDL_WINDOW_SHOWN);
>    if(window < 0)
>    {
>        SDL_Log("Window could not be created! SDL_Error: %s\n", SDL_GetError());
>        return 0;
>    }
>
>    renderer = SDL_CreateRenderer(window, -1, SDL_RENDERER_PRESENTVSYNC);
>    if(renderer < 0)
>    {
>        SDL_Log("Renderer could not be created! SDL_Error: %s\n", SDL_GetError());
>        return 0;
>    }
>
>	SDL_RendererInfo rinfo = {0,};
>	SDL_GetRendererInfo(renderer, &rinfo);
>	printf("%s\n", rinfo.name);
>
>    TTF_Font *font = TTF_OpenFont(TTF_FONT_PATH("arial.ttf"), 15);
>
>    Uint8 isRunning = 1;
>
>    SDL_Point mouse;
>    SDL_Rect *rect1 = &(SDL_Rect){500, 200, 50, 50};
>    SDL_Rect *rect2 = &(SDL_Rect){30, 30, 100, 100};
>
>    char someString[255];
>
>    SDL_Event event;
>    while(isRunning == 1)
>    {
>        // clear screen
>        SDL_SetRenderDrawColor(renderer, 100, 100, 100, 255);
>        SDL_RenderClear(renderer);
>
>        // handle events
>        while(SDL_PollEvent(&event))
>        {
>            if(event.type == SDL_QUIT)
>            {
>                isRunning = 0;
>            }
>
>            if(event.type == SDL_MOUSEMOTION)
>            {
>                SDL_GetMouseState(&mouse.x, &mouse.y);
>            }
>        }
>
>        SDL_SetRenderDrawBlendMode(renderer, SDL_BLENDMODE_BLEND);
>
>        // draw a white rectangle
>        SDL_SetRenderDrawColor(renderer, 255, 255, 255, 255);
>        SDL_RenderFillRect(renderer, rect1);
>
>        SDL_SetRenderDrawColor(renderer, 0, 0, 255, 255);
>        SDL_RenderFillRect(renderer, rect2);
>
>        // define string with mouse x, y coords
>        sprintf(someString, "x: %d, y: %d", mouse.x, mouse.y);
>        SDL_Point textPos = {10, 10};
>        SDL_Surface *fontSurface = TTF_RenderText_Blended(font, someString, (SDL_Color){0, 0, 0, 255}); // create font surface
>        SDL_Texture *fontTexture = SDL_CreateTextureFromSurface(renderer, fontSurface);  // create the texture
>
>        // get clip widh and height from fontsurface clip rect
>        SDL_Rect fontRect = fontSurface->clip_rect;
>        fontRect.x = textPos.x; 
>        fontRect.y = textPos.y;
>
>        // copy text to renderer
>        SDL_RenderCopy(renderer, fontTexture, NULL, &fontRect);
>
>        // remove this and screen goes blank
>//        SDL_RenderDrawPoint(renderer, 0, 0);
>
>        // delete surface and texture
>        SDL_FreeSurface(fontSurface);
>        SDL_DestroyTexture(fontTexture);
>        
>
>        // finish rendering
>        SDL_RenderPresent(renderer);
>    }
>
>    TTF_CloseFont(font);
>    SDL_DestroyRenderer(renderer);
>    SDL_DestroyWindow(window);
>    SDL_Quit();
>
>    return 0;
>}

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Attachments on bug 4768: 3930

We are currently migrating Bugzilla to GitHub issues.Any changes made to the bug tracker now will be lost, so please do not post new bugs or make changes to them.When we're done, all bug URLs will redirect to their equivalent location on the new bug tracker.

We are currently migrating Bugzilla to GitHub issues.
Any changes made to the bug tracker now will be lost, so please do not post new bugs or make changes to them.
When we're done, all bug URLs will redirect to their equivalent location on the new bug tracker.