rdtk_button.c

 
#include <winpr/assert.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 offsetX = 0;
  uint16_t offsetY = 0;
  uint16_t textWidth = 0;
  uint16_t textHeight = 0;
  uint16_t fillWidth = 0;
  uint16_t fillHeight = 0;
 
  WINPR_ASSERT(surface);
  WINPR_ASSERT(button);
  WINPR_ASSERT(text);
 
  rdtkEngine* engine = surface->engine;
  rdtkFont* font = engine->font;
  rdtkNinePatch* ninePatch = button->ninePatch;
 
  rdtk_font_text_draw_size(font, &textWidth, &textHeight, text);
 
  rdtk_nine_patch_draw(surface, nXDst, nYDst, nWidth, nHeight, ninePatch);
 
  if ((textWidth > 0) && (textHeight > 0))
  {
    fillWidth = nWidth - (ninePatch->width - ninePatch->fillWidth);
    fillHeight = nHeight - (ninePatch->height - ninePatch->fillHeight);
 
    offsetX = ninePatch->fillLeft;
    offsetY = ninePatch->fillTop;
 
    if (textWidth < fillWidth)
      offsetX = ((fillWidth - textWidth) / 2) + ninePatch->fillLeft;
    else if (textWidth < ninePatch->width)
      offsetX = ((ninePatch->width - textWidth) / 2);
 
    if (textHeight < fillHeight)
      offsetY = ((fillHeight - textHeight) / 2) + ninePatch->fillTop;
    else if (textHeight < ninePatch->height)
      offsetY = ((ninePatch->height - textHeight) / 2);
 
    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;
}