src/frontends/gtk/GScreen.C

   1 /**
   2  * \file GScreen.C
   3  * This file is part of LyX, the document processor.
   4  * Licence details can be found in the file COPYING.
   5  *
   6  * \author Huang Ying
   7  *
   8  * Full author contact details are available in file CREDITS.
   9  */
  10
  11 #include <config.h>
  12
  13 // Too hard to make concept checks work with this file
  14 #ifdef _GLIBCXX_CONCEPT_CHECKS
  15 #undef _GLIBCXX_CONCEPT_CHECKS
  16 #endif
  17 #ifdef _GLIBCPP_CONCEPT_CHECKS
  18 #undef _GLIBCPP_CONCEPT_CHECKS
  19 #endif
  20
  21 #include "GScreen.h"
  22
  23 #include "GWorkArea.h"
  24
  25 #include "buffer.h"
  26 #include "BufferView.h"
  27 #include "debug.h"
  28 #include "language.h"
  29 #include "LColor.h"
  30 #include "lyxtext.h"
  31 #include "lyxrow.h"
  32
  33 #include "frontends/Painter.h"
  34
  35 #include "insets/insettext.h"
  36
  37 #include <algorithm>
  38
  39 // FIXME: defined in X.h, spuriously pulled in by some gui headers
  40 #undef CursorShape
  41
  42 namespace lyx {
  43 namespace frontend {
  44
  45         //using lyx::frontend::CursorShape;
  46
  47 GScreen::GScreen(GWorkArea & o)
  48         : owner_(o)
  49 {
  50         // the cursor isnt yet visible
  51         cursorX_ = 0;
  52         cursorY_ = 0;
  53         cursorW_ = 0;
  54         cursorH_ = 0;
  55 }
  56
  57
  58 GScreen::~GScreen()
  59 {
  60 }
  61
  62
  63 void GScreen::setCursorColor(Glib::RefPtr<Gdk::GC> gc)
  64 {
  65         Gdk::Color * clr = owner_.getColorHandler().
  66                 getGdkColor(LColor::cursor);
  67         gc->set_foreground(*clr);
  68 }
  69
  70
  71 void GScreen::showCursor(int x, int y, int h, CursorShape shape)
  72 {
  73         // Update the cursor color.
  74         setCursorColor(owner_.getGC());
  75
  76         cursorX_ = x;
  77         cursorY_ = y;
  78         cursorH_ = h;
  79
  80         switch (shape) {
  81         case BAR_SHAPE:
  82                 cursorW_ = 1;
  83                 break;
  84         case L_SHAPE:
  85                 cursorW_ = cursorH_ / 3;
  86                 break;
  87         case REVERSED_L_SHAPE:
  88                 cursorW_ = cursorH_ / 3;
  89                 cursorX_ = x - cursorW_ + 1;
  90                 break;
  91         }
  92
  93         int fx, fy, fwidth, fheight, fdepth;
  94         owner_.getWindow()->get_geometry(fx, fy, fwidth, fheight, fdepth);
  95         cursorPixmap_ = Gdk::Pixmap::create(owner_.getWindow(),
  96                                             cursorW_,
  97                                             cursorH_,
  98                                             fdepth);
  99         cursorPixmap_->draw_drawable(owner_.getGC(),
 100                                      owner_.getWindow(),
 101                                      owner_.xpos() + cursorX_,
 102                                      owner_.ypos() + cursorY_,
 103                                      0, 0,
 104                                      cursorW_,
 105                                      cursorH_);
 106         owner_.getWindow()->draw_line(owner_.getGC(),
 107                                       x + owner_.xpos(),
 108                                       y + owner_.ypos(),
 109                                       x + owner_.xpos(),
 110                                       y + h - 1 + owner_.ypos());
 111         switch (shape) {
 112         case BAR_SHAPE:
 113                 break;
 114         case L_SHAPE:
 115         case REVERSED_L_SHAPE:
 116                 owner_.getWindow()->draw_line(owner_.getGC(),
 117                                               owner_.xpos() + cursorX_,
 118                                               owner_.ypos() + y + h - 1,
 119                                               owner_.xpos() + cursorX_ + cursorW_ - 1,
 120                                               owner_.xpos() + y + h - 1);
 121                 break;
 122         }
 123 }
 124
 125
 126 void GScreen::removeCursor()
 127 {
 128         if (cursorPixmap_) {
 129                 owner_.getWindow()->draw_drawable(owner_.getGC(),
 130                                                   cursorPixmap_,
 131                                                   0, 0,
 132                                                   cursorX_ + owner_.xpos(),
 133                                                   cursorY_ + owner_.ypos(),
 134                                                   cursorW_, cursorH_);
 135         }
 136 }
 137
 138
 139 void GScreen::expose(int x, int y, int w, int h)
 140 {
 141         lyxerr[Debug::GUI] << "expose " << w << 'x' << h
 142                 << '+' << x << '+' << y << std::endl;
 143         owner_.getWindow()->draw_drawable(owner_.getGC(),
 144                                           owner_.getPixmap(),
 145                                           x, y,
 146                                           x + owner_.xpos(),
 147                                           y + owner_.ypos(),
 148                                           w, h);
 149 }
 150
 151 } // namespace frontend
 152 } // namespace lyx