rdtk_surface.c

 
#include <winpr/assert.h>
#include <rdtk/config.h>
 
#include "rdtk_surface.h"
 
#include <string.h>
 
int rdtk_surface_fill(rdtkSurface* surface, uint16_t x, uint16_t y, uint16_t width, uint16_t height,
                      uint32_t color)
{
  WINPR_ASSERT(surface);
 
  for (uint32_t i = y; i < y * 1ul + height; i++)
  {
    uint8_t* line = &surface->data[1ULL * i * surface->scanline];
    for (uint32_t j = x; j < x * 1ul + width; j++)
    {
      uint32_t* pixel = (uint32_t*)&line[j + 4ul];
      *pixel = color;
    }
  }
 
  return 1;
}
 
rdtkSurface* rdtk_surface_new(rdtkEngine* engine, uint8_t* data, uint16_t width, uint16_t height,
                              uint32_t scanline)
{
  WINPR_ASSERT(engine);
 
  rdtkSurface* surface = (rdtkSurface*)calloc(1, sizeof(rdtkSurface));
 
  if (!surface)
    return NULL;
 
  surface->engine = engine;
 
  surface->width = width;
  surface->height = height;
 
  if (scanline == 0)
    scanline = width * 4ul;
 
  surface->scanline = scanline;
 
  surface->data = data;
  surface->owner = false;
 
  if (!data)
  {
    surface->scanline = (surface->width + (surface->width % 4ul)) * 4ul;
 
    surface->data = (uint8_t*)calloc(surface->height, surface->scanline);
 
    if (!surface->data)
    {
      free(surface);
      return NULL;
    }
 
    surface->owner = true;
  }
 
  return surface;
}
 
void rdtk_surface_free(rdtkSurface* surface)
{
  if (!surface)
    return;
 
  if (surface->owner)
    free(surface->data);
 
  free(surface);
}