rdtk_button.c

 
#include <winpr/assert.h>
#include <winpr/cast.h>
 
#include <rdtk/config.h>
 
#include "rdtk_font.h"
 
#include "rdtk_button.h"
 
int rdtk_button_draw(rdtkSurface* surface, uint16_t nXDst, uint16_t nYDst, uint16_t nWidth,
                     uint16_t nHeight, rdtkButton* button, const char* text)
{
  uint16_t textWidth = 0;
  uint16_t textHeight = 0;
 
  WINPR_ASSERT(surface);
  WINPR_ASSERT(button);
  WINPR_ASSERT(text);
 
  rdtkEngine* engine = surface->engine;
  rdtkFont* font = engine->font;
  rdtkNinePatch* ninePatch = button->ninePatch;
 
  const int rc1 = rdtk_font_text_draw_size(font, &textWidth, &textHeight, text);
  if (rc1 < 0)
    return rc1;
 
  const int rc2 = rdtk_nine_patch_draw(surface, nXDst, nYDst, nWidth, nHeight, ninePatch);
  if (rc2 < 0)
    return rc2;
 
  if ((textWidth > 0) && (textHeight > 0))
  {
    const int wd = (ninePatch->width - ninePatch->fillWidth);
    const int hd = (ninePatch->height - ninePatch->fillHeight);
 
    const uint16_t fillWidth = nWidth - WINPR_ASSERTING_INT_CAST(uint16_t, wd);
    const uint16_t fillHeight = nHeight - WINPR_ASSERTING_INT_CAST(uint16_t, hd);
    uint16_t offsetX = WINPR_ASSERTING_INT_CAST(UINT16, ninePatch->fillLeft);
    uint16_t offsetY = WINPR_ASSERTING_INT_CAST(UINT16, ninePatch->fillTop);
 
    if (textWidth < fillWidth)
    {
      const int twd = ((fillWidth - textWidth) / 2) + ninePatch->fillLeft;
      offsetX = WINPR_ASSERTING_INT_CAST(uint16_t, twd);
    }
    else if (textWidth < ninePatch->width)
    {
      const int twd = ((ninePatch->width - textWidth) / 2);
      offsetX = WINPR_ASSERTING_INT_CAST(uint16_t, twd);
    }
 
    if (textHeight < fillHeight)
    {
      const int twd = ((fillHeight - textHeight) / 2) + ninePatch->fillTop;
      offsetY = WINPR_ASSERTING_INT_CAST(uint16_t, twd);
    }
    else if (textHeight < ninePatch->height)
    {
      const int twd = ((ninePatch->height - textHeight) / 2);
      offsetY = WINPR_ASSERTING_INT_CAST(uint16_t, twd);
    }
 
    return rdtk_font_draw_text(surface, nXDst + offsetX, nYDst + offsetY, font, text);
  }
 
  return 1;
}
 
rdtkButton* rdtk_button_new(rdtkEngine* engine, rdtkNinePatch* ninePatch)
{
  WINPR_ASSERT(engine);
  WINPR_ASSERT(ninePatch);
 
  rdtkButton* button = (rdtkButton*)calloc(1, sizeof(rdtkButton));
 
  if (!button)
    return NULL;
 
  button->engine = engine;
  button->ninePatch = ninePatch;
 
  return button;
}
 
void rdtk_button_free(rdtkButton* button)
{
  free(button);
}
 
int rdtk_button_engine_init(rdtkEngine* engine)
{
  WINPR_ASSERT(engine);
 
  if (!engine->button)
  {
    engine->button = rdtk_button_new(engine, engine->button9patch);
    if (!engine->button)
      return -1;
  }
 
  return 1;
}
 
int rdtk_button_engine_uninit(rdtkEngine* engine)
{
  WINPR_ASSERT(engine);
 
  if (engine->button)
  {
    rdtk_button_free(engine->button);
    engine->button = NULL;
  }
 
  return 1;
}