code.vuplus.com Git - vuplus_dvbapp/blob - lib/gui/epixmap.cpp

   1 #include <lib/gui/epixmap.h>
   2 #include <lib/gdi/epng.h>
   3 #include <lib/gui/ewidgetdesktop.h>
   4
   5 ePixmap::ePixmap(eWidget *parent)
   6         :eWidget(parent), m_alphatest(false), m_scale(false), m_have_border_color(false), m_border_width(0)
   7 {
   8 }
   9
  10 void ePixmap::setAlphatest(int alphatest)
  11 {
  12         m_alphatest = alphatest;
  13         setTransparent(alphatest);
  14 }
  15
  16 void ePixmap::setScale(int scale)
  17 {
  18         if (m_scale != scale)
  19         {
  20                 m_scale = scale;
  21                 invalidate();
  22         }
  23 }
  24
  25 void ePixmap::setPixmap(gPixmap *pixmap)
  26 {
  27         m_pixmap = pixmap;
  28         event(evtChangedPixmap);
  29 }
  30
  31 void ePixmap::setPixmap(ePtr<gPixmap> &pixmap)
  32 {
  33         m_pixmap = pixmap;
  34         event(evtChangedPixmap);
  35 }
  36
  37 void ePixmap::setPixmapFromFile(const char *filename)
  38 {
  39         loadPNG(m_pixmap, filename);
  40
  41         if (!m_pixmap)
  42         {
  43                 eDebug("ePixmap::setPixmapFromFile: loadPNG failed");
  44                 return;
  45         }
  46
  47                 // TODO: This only works for desktop 0
  48         getDesktop(0)->makeCompatiblePixmap(*m_pixmap);
  49         event(evtChangedPixmap);
  50 }
  51
  52 void ePixmap::setBorderWidth(int pixel)
  53 {
  54         m_border_width=pixel;
  55         invalidate();
  56 }
  57
  58 void ePixmap::setBorderColor(const gRGB &color)
  59 {
  60         m_border_color=color;
  61         m_have_border_color=true;
  62         invalidate();
  63 }
  64
  65 void ePixmap::checkSize()
  66 {
  67                         /* when we have no pixmap, or a pixmap of different size, we need
  68            to enable transparency in any case. */
  69         if (m_pixmap && m_pixmap->size() == size() && !m_alphatest)
  70                 setTransparent(0);
  71         else
  72                 setTransparent(1);
  73                 /* fall trough. */
  74 }
  75
  76 int ePixmap::event(int event, void *data, void *data2)
  77 {
  78         switch (event)
  79         {
  80         case evtPaint:
  81         {
  82                 ePtr<eWindowStyle> style;
  83
  84                 eSize s(size());
  85                 getStyle(style);
  86
  87 //      we don't clear the background before because of performance reasons.
  88 //      when the pixmap is too small to fit the whole widget area, the widget is
  89 //      transparent anyway, so the background is already painted.
  90 //              eWidget::event(event, data, data2);
  91
  92                 gPainter &painter = *(gPainter*)data2;
  93                 if (m_pixmap)
  94                 {
  95                         int flags = 0;
  96                         if (m_alphatest == 0)
  97                                 flags = 0;
  98                         else if (m_alphatest == 1)
  99                                 flags = gPainter::BT_ALPHATEST;
 100                         else if (m_alphatest == 2)
 101                                 flags = gPainter::BT_ALPHABLEND;
 102                         if (m_scale)
 103                                 painter.blitScale(m_pixmap, eRect(ePoint(0, 0), size()), eRect(), flags);
 104                         else
 105                                 painter.blit(m_pixmap, ePoint(0, 0), eRect(), flags);
 106                 }
 107
 108 // border
 109                 if (m_have_border_color)
 110                         painter.setForegroundColor(m_border_color);
 111                 painter.fill(eRect(0, 0, s.width(), m_border_width));
 112                 painter.fill(eRect(0, m_border_width, m_border_width, s.height()-m_border_width));
 113                 painter.fill(eRect(m_border_width, s.height()-m_border_width, s.width()-m_border_width, m_border_width));
 114                 painter.fill(eRect(s.width()-m_border_width, m_border_width, m_border_width, s.height()-m_border_width));
 115
 116                 return 0;
 117         }
 118         case evtChangedPixmap:
 119                 checkSize();
 120                 invalidate();
 121                 return 0;
 122         case evtChangedSize:
 123                 checkSize();
 124                         /* fall trough. */
 125         default:
 126                 return eWidget::event(event, data, data2);
 127         }
 128 }