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 #include <gtkmm.h>
  13
  14 #include "GScreen.h"
  15
  16 #include "GWorkArea.h"
  17
  18 #include "buffer.h"
  19 #include "BufferView.h"
  20 #include "debug.h"
  21 #include "language.h"
  22 #include "LColor.h"
  23 #include "lyxtext.h"
  24 #include "lyxrow.h"
  25
  26 #include "frontends/screen.h"
  27 #include "frontends/font_metrics.h"
  28 #include "frontends/Painter.h"
  29 #include "frontends/WorkArea.h"
  30
  31 #include "insets/insettext.h"
  32
  33 #include <algorithm>
  34
  35 namespace lyx {
  36 namespace frontend {
  37
  38 GScreen::GScreen(GWorkArea & o)
  39         : LyXScreen(), owner_(o)
  40 {
  41         // the cursor isnt yet visible
  42         cursorX_ = 0;
  43         cursorY_ = 0;
  44         cursorW_ = 0;
  45         cursorH_ = 0;
  46 }
  47
  48
  49 GScreen::~GScreen()
  50 {
  51 }
  52
  53
  54 WorkArea & GScreen::workarea() const
  55 {
  56         return owner_;
  57 }
  58
  59
  60 void GScreen::setCursorColor(Glib::RefPtr<Gdk::GC> gc)
  61 {
  62         Gdk::Color * clr = owner_.getColorHandler().
  63                 getGdkColor(LColor::cursor);
  64         gc->set_foreground(*clr);
  65 }
  66
  67
  68 void GScreen::showCursor(int x, int y,
  69                          int h, Cursor_Shape shape)
  70 {
  71         // Update the cursor color.
  72         setCursorColor(owner_.getGC());
  73
  74         cursorX_ = x;
  75         cursorY_ = y;
  76         cursorH_ = h;
  77
  78         switch (shape) {
  79         case BAR_SHAPE:
  80                 cursorW_ = 1;
  81                 break;
  82         case L_SHAPE:
  83                 cursorW_ = cursorH_ / 3;
  84                 break;
  85         case REVERSED_L_SHAPE:
  86                 cursorW_ = cursorH_ / 3;
  87                 cursorX_ = x - cursorW_ + 1;
  88                 break;
  89         }
  90
  91         int fx, fy, fwidth, fheight, fdepth;
  92         owner_.getWindow()->get_geometry(fx, fy, fwidth, fheight, fdepth);
  93         cursorPixmap_ = Gdk::Pixmap::create(owner_.getWindow(),
  94                                             cursorW_,
  95                                             cursorH_,
  96                                             fdepth);
  97         cursorPixmap_->draw_drawable(owner_.getGC(),
  98                                      owner_.getWindow(),
  99                                      owner_.xpos() + cursorX_,
 100                                      owner_.ypos() + cursorY_,
 101                                      0, 0,
 102                                      cursorW_,
 103                                      cursorH_);
 104         owner_.getWindow()->draw_line(owner_.getGC(),
 105                                       x + owner_.xpos(),
 106                                       y + owner_.ypos(),
 107                                       x + owner_.xpos(),
 108                                       y + h - 1 + owner_.ypos());
 109         switch (shape) {
 110         case BAR_SHAPE:
 111                 break;
 112         case L_SHAPE:
 113         case REVERSED_L_SHAPE:
 114                 owner_.getWindow()->draw_line(owner_.getGC(),
 115                                               owner_.xpos() + cursorX_,
 116                                               owner_.ypos() + y + h - 1,
 117                                               owner_.xpos() + cursorX_ + cursorW_ - 1,
 118                                               owner_.xpos() + y + h - 1);
 119                 break;
 120         }
 121 }
 122
 123
 124 void GScreen::removeCursor()
 125 {
 126         if (cursorPixmap_) {
 127                 owner_.getWindow()->draw_drawable(owner_.getGC(),
 128                                                   cursorPixmap_,
 129                                                   0, 0,
 130                                                   cursorX_ + owner_.xpos(),
 131                                                   cursorY_ + owner_.ypos(),
 132                                                   cursorW_, cursorH_);
 133         }
 134 }
 135
 136
 137 void GScreen::expose(int x, int y, int w, int h)
 138 {
 139         lyxerr[Debug::GUI] << "expose " << w << 'x' << h
 140                 << '+' << x << '+' << y << std::endl;
 141         owner_.getWindow()->draw_drawable(owner_.getGC(),
 142                                           owner_.getPixmap(),
 143                                           x, y,
 144                                           x + owner_.xpos(),
 145                                           y + owner_.ypos(),
 146                                           w, h);
 147 }
 148
 149 } // namespace frontend
 150 } // namespace lyx