cppconsui/ColorPickerComboBox.cpp

   1 // Copyright (C) 2012 Mark Pustjens <pustjens@dds.nl>
   2 // Copyright (C) 2012-2015 Petr Pavlu <setup@dagobah.cz>
   3 //
   4 // This file is part of CenterIM.
   5 //
   6 // CenterIM is free software; you can redistribute it and/or modify
   7 // it under the terms of the GNU General Public License as published by
   8 // the Free Software Foundation; either version 2 of the License, or
   9 // (at your option) any later version.
  10 //
  11 // CenterIM is distributed in the hope that it will be useful,
  12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 // GNU General Public License for more details.
  15 //
  16 // You should have received a copy of the GNU General Public License
  17 // along with CenterIM.  If not, see <http://www.gnu.org/licenses/>.
  18
  19 /// @file
  20 /// ColorPickerComboBox class implementation.
  21 ///
  22 /// @ingroup cppconsui
  23
  24 #include "ColorPickerComboBox.h"
  25
  26 #include "gettext.h"
  27 #include <algorithm>
  28
  29 // Invalid color number that is used for the "More..." button in
  30 // ColorPickerComboBox.
  31 #define COLOR_MORE (-2)
  32
  33 // Width of the drop-down menu.
  34 #define MENU_WIDTH 12
  35
  36 namespace CppConsUI {
  37
  38 ColorPickerComboBox::ColorPickerComboBox(int w, int color)
  39   : ComboBox(w, 1), selected_color_(color)
  40 #ifdef COLORPICKER_256COLOR
  41     ,
  42     colorpicker_(nullptr)
  43 #endif // COLORPICKER_256COLOR
  44 {
  45   // Add ANSI colors.
  46   int colors = std::min(Curses::NUM_DEFAULT_COLORS, Curses::getColorCount());
  47   for (int i = 0; i < colors; ++i)
  48     addOption(nullptr, i);
  49
  50   // Add options for default color and to open the 256 color dialog.
  51   addOption(nullptr, Curses::Color::DEFAULT);
  52 #ifdef COLORPICKER_256COLOR
  53   addOption(_("More..."), COLOR_MORE);
  54 #endif // COLORPICKER_256COLOR
  55
  56   // Set initial selection.
  57   setSelectedByData(color);
  58 }
  59
  60 ColorPickerComboBox::~ColorPickerComboBox()
  61 {
  62 #ifdef COLORPICKER_256COLOR
  63   if (colorpicker_ != nullptr)
  64     colorpicker_->close();
  65 #endif // COLORPICKER_256COLOR
  66 }
  67
  68 void ColorPickerComboBox::setColor(int new_color)
  69 {
  70   if (new_color < Curses::Color::DEFAULT ||
  71     new_color >= Curses::getColorCount()) {
  72     // an invalid color was specified, use the default color
  73     new_color = Curses::Color::DEFAULT;
  74   }
  75
  76   if (new_color == selected_color_)
  77     return;
  78
  79   selected_color_ = new_color;
  80
  81 #ifdef COLORPICKER_256COLOR
  82   if (selected_color_ >= Curses::Color::DEFAULT &&
  83     selected_color_ < Curses::NUM_DEFAULT_COLORS)
  84     setSelectedByData(selected_color_);
  85   else
  86     setSelectedByData(COLOR_MORE);
  87 #else
  88   setSelectedByData(selected_color_);
  89 #endif // COLORPICKER_256COLOR
  90 }
  91
  92 int ColorPickerComboBox::draw(Curses::ViewPort area, Error &error)
  93 {
  94   int attrs;
  95   if (has_focus_) {
  96     DRAW(getAttributes(ColorScheme::PROPERTY_BUTTON_FOCUS, &attrs, error));
  97     attrs |= Curses::Attr::REVERSE;
  98   }
  99   else
 100     DRAW(getAttributes(ColorScheme::PROPERTY_BUTTON_NORMAL, &attrs, error));
 101
 102   DRAW(area.attrOn(attrs, error));
 103   DRAW(area.fill(attrs, 0, 0, real_width_, 1, error));
 104   DRAW(area.addChar(0, 0, '[', error));
 105   DRAW(area.addChar(real_width_ - 1, 0, ']', error));
 106   DRAW(area.attrOff(attrs, error));
 107
 108   if (selected_color_ == Curses::Color::DEFAULT)
 109     DRAW(area.addString(1, 0, _("DEFAULT"), error));
 110   else {
 111     ColorScheme::Color c(Curses::Color::DEFAULT, selected_color_);
 112     int colorpair;
 113     DRAW(COLORSCHEME->getColorPair(c, &colorpair, error));
 114     DRAW(area.attrOn(colorpair, error));
 115     DRAW(area.fill(colorpair, 1, 0, real_width_ - 2, 1, error));
 116     DRAW(area.attrOff(colorpair, error));
 117   }
 118
 119   return 0;
 120 }
 121
 122 void ColorPickerComboBox::onDropDown(Button & /*activator*/)
 123 {
 124   dropdown_ = new MenuWindow(*this, MENU_WIDTH, AUTOSIZE);
 125   dropdown_->signal_close.connect(
 126     sigc::mem_fun(this, &ColorPickerComboBox::dropDownClose));
 127
 128   int i;
 129   ComboBoxEntries::iterator j;
 130   for (i = 0, j = options_.begin(); j != options_.end(); ++i, ++j) {
 131     Button *b;
 132     if (j->data == COLOR_MORE) {
 133       // Add the "More..." button.
 134       b = dropdown_->appendItem(j->title,
 135         sigc::bind(sigc::mem_fun(this, &ColorPickerComboBox::dropDownOk), i));
 136     }
 137     else {
 138       // Normal color button.
 139       b = new ColorButton(j->data);
 140       dropdown_->appendWidget(*b);
 141       b->signal_activate.connect(
 142         sigc::bind(sigc::mem_fun(this, &ColorPickerComboBox::dropDownOk), i));
 143     }
 144     if (i == selected_entry_)
 145       b->grabFocus();
 146   }
 147
 148   dropdown_->show();
 149 }
 150
 151 void ColorPickerComboBox::dropDownOk(Button & /*activator*/, int new_entry)
 152 {
 153   dropdown_->close();
 154
 155 #ifdef COLORPICKER_256COLOR
 156   if (options_[new_entry].data != COLOR_MORE) {
 157     setColor(options_[new_entry].data);
 158     return;
 159   }
 160
 161   // Rhe "More..." button was selected, display the color picker dialog.
 162   // @todo Initialize the color picker dialog with a selected color.
 163   colorpicker_ = new ColorPickerDialog("", 0, 0);
 164   colorpicker_->signal_response.connect(
 165     sigc::mem_fun(this, &ColorPickerComboBox::colorPickerOk));
 166   colorpicker_->signal_close.connect(
 167     sigc::mem_fun(this, &ColorPickerComboBox::colorPickerClose));
 168   colorpicker_->show();
 169 #else
 170   setColor(options_[new_entry].data);
 171 #endif // COLORPICKER_256COLOR
 172 }
 173
 174 #ifdef COLORPICKER_256COLOR
 175 void ColorPickerComboBox::colorPickerOk(ColorPickerDialog &activator,
 176   AbstractDialog::ResponseType response, int new_color)
 177 {
 178   if (response != AbstractDialog::RESPONSE_OK)
 179     return;
 180
 181   // Selected option did not change.
 182   if (new_color == selected_color)
 183     return;
 184
 185   setColor(new_color);
 186 }
 187
 188 void ColorPickerComboBox::colorPickerClose(Window & /*window*/)
 189 {
 190   colorpicker_ = nullptr;
 191 }
 192 #endif // COLORPICKER_256COLOR
 193
 194 void ColorPickerComboBox::setSelected(int new_entry)
 195 {
 196   ComboBox::setSelected(new_entry);
 197
 198   selected_color_ = options_[new_entry].data;
 199   signal_color_changed(*this, selected_color_);
 200 }
 201
 202 ColorPickerComboBox::ColorButton::ColorButton(int color)
 203   : Button(MENU_WIDTH - 2, 1, ""), color_(color)
 204 {
 205 }
 206
 207 int ColorPickerComboBox::ColorButton::draw(Curses::ViewPort area, Error &error)
 208 {
 209   int attrs;
 210   if (has_focus_) {
 211     DRAW(getAttributes(ColorScheme::PROPERTY_BUTTON_FOCUS, &attrs, error));
 212     attrs |= Curses::Attr::REVERSE;
 213   }
 214   else
 215     DRAW(getAttributes(ColorScheme::PROPERTY_BUTTON_NORMAL, &attrs, error));
 216
 217   DRAW(area.attrOn(attrs, error));
 218   DRAW(area.fill(attrs, 0, 0, real_width_, 1, error));
 219   DRAW(area.addChar(0, 0, '[', error));
 220   DRAW(area.addChar(real_width_ - 1, 0, ']', error));
 221   DRAW(area.attrOff(attrs, error));
 222
 223   if (color_ == Curses::Color::DEFAULT)
 224     DRAW(area.addString(1, 0, _("DEFAULT "), error));
 225   else {
 226     ColorScheme::Color c(Curses::Color::DEFAULT, color_);
 227     int colorpair;
 228     DRAW(COLORSCHEME->getColorPair(c, &colorpair, error));
 229     DRAW(area.attrOn(colorpair, error));
 230     DRAW(area.fill(colorpair, 1, 0, real_width_ - 2, 1, error));
 231     DRAW(area.attrOff(colorpair, error));
 232   }
 233
 234   return 0;
 235 }
 236
 237 } // namespace CppConsUI
 238
 239 // vim: set tabstop=2 shiftwidth=2 textwidth=80 expandtab: