chevron_view.cpp

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#include <escher/chevron_view.h>
#include <escher/palette.h>

const uint8_t chevronMask[ChevronView::k_chevronHeight][ChevronView::k_chevronWidth] = {
  {0x0C, 0xE1, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF},
  {0x00, 0x00, 0x45, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF},
  {0x00, 0x00, 0x00, 0x0C, 0xE1, 0xFF, 0xFF, 0xFF},
  {0x00, 0x00, 0x00, 0x00, 0x00, 0x45, 0xFF, 0xFF},
  {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0C, 0x45},
  {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0C, 0x45},
  {0x00, 0x00, 0x00, 0x00, 0x00, 0x45, 0xFF, 0xFF},
  {0x00, 0x00, 0x00, 0x0C, 0xE1, 0xFF, 0xFF, 0xFF},
  {0x00, 0x00, 0x45, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF},
  {0x0C, 0xE1, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF},
};

ChevronView::ChevronView() :
  View()
{
}

KDColor s_workingBuffer[ChevronView::k_chevronWidth*ChevronView::k_chevronHeight];

void ChevronView::drawRect(KDContext * ctx, KDRect rect) const {
  /* Draw the chevron aligned on the right of the view and vertically centered.
   * The heightCenter is the coordinate of the vertical middle of the view. That
   * way, (heightCenter-switchHalfHeight) indicates the top the chevron. */
  KDCoordinate width = bounds().width();
  KDCoordinate heightCenter = bounds().height()/2;
  KDCoordinate chevronHalfHeight = k_chevronHeight/2;
  KDRect frame(width - k_chevronWidth, heightCenter -chevronHalfHeight, k_chevronWidth, k_chevronHeight);
  ctx->blendRectWithMask(frame, Palette::YellowDark, (const uint8_t *)chevronMask, s_workingBuffer);
}

KDSize ChevronView::minimalSizeForOptimalDisplay() const {
  return KDSize(k_chevronWidth, k_chevronHeight);
}