1 | #ifndef __GTK_PAPER_TAPE_COLOR__ |
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2 | #define __GTK_PAPER_TAPE_COLOR__ |
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3 | |
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4 | #include <gtkmm/drawingarea.h> |
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5 | #include <gtkmm/checkmenuitem.h> |
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6 | #include <gtkmm/menuitem.h> |
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7 | #include <gtkmm/sizegroup.h> |
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8 | #include <gtkmm/actiongroup.h> |
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9 | #include <gtkmm/toggleaction.h> |
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10 | #include <gtkmm/colorbutton.h> |
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11 | #include <gtkmm/action.h> |
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12 | #include <vector> |
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13 | #include <iostream> |
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14 | |
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15 | #include <cairomm/pattern.h> |
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16 | |
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17 | namespace Gtk |
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18 | { class PaperTapeColor; } |
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19 | #include "gtkpapertape.h" |
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20 | #include "gtkpapertapeview.h" |
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21 | #include "lochstreifen.h" |
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22 | |
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23 | namespace Gtk { |
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24 | |
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25 | |
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26 | /** |
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27 | * The PaperTapeColor class represents a color which will be used |
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28 | * to paint some component on the PAPERTAPE. It also implements |
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29 | * an Action -- that is: This class is an Action. It serves a |
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30 | * nice Menuitem for color selection, as well as an auxillary |
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31 | * toggle Menuitem to switch the display of that LOCHSTREIFEN |
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32 | * component on or off. |
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33 | * This is mainly intended to be used with PaperTapeView. That |
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34 | * class automatically initializes such a PaperTapeColor class |
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35 | * for every LOCHSTREIFEN cairo_pattern_t object. These Color |
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36 | * Objects are stored in a map. |
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37 | * @see PaperTapeView::colors |
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38 | **/ |
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39 | class PaperTapeColor : public Action { |
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40 | private: |
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41 | /// The toggle action as a "nested action", somewhat quick&dirty |
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42 | Glib::RefPtr<ToggleAction> toggle_action; |
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43 | /// Much more Quick and Dirty: The menuitem which will be |
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44 | /// generated at run time by create_menu_item_vfunc. |
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45 | /// Stored here for enable/disable access from toggled() |
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46 | MenuItem* menu_item; |
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47 | |
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48 | /// The View for which this color is allocated. |
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49 | /// Deprecated -- not used at all! |
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50 | PaperTapeView* view; |
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51 | |
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52 | /// can this element be disabled with |
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53 | /// display_toggle? |
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54 | bool switchable; |
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55 | /// Title for color dialog |
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56 | Glib::ustring dialog_title; |
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57 | /// Label for menu color item |
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58 | Glib::ustring menu_label; |
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59 | /// Label for toggle menu item |
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60 | Glib::ustring toggle_label; |
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61 | /// Action name (base name for toggle and color action) |
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62 | Glib::ustring action_name; |
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63 | /// Target pattern which will be affected |
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64 | cairo_pattern_t **target; |
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65 | |
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66 | /// The current value of the color |
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67 | cairo_pattern_t *value; |
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68 | |
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69 | /// The constructor is private, too. USe construct(...) |
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70 | /// to get a RefPtr instance. |
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71 | PaperTapeColor(const Glib::ustring& name); |
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72 | |
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73 | /// see signal_color_changed() for an explanation. |
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74 | sigc::signal<void,PaperTapeColor*> color_changed; |
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75 | protected: |
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76 | /// This method creates the ColorMenuItem thing |
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77 | /// at runtime. |
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78 | virtual Widget* create_menu_item_vfunc(); |
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79 | /// This is used to keep the Gtk Action mechanism from |
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80 | /// overwriting my own MenuItem with a stupid GtkLabel. |
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81 | virtual void connect_proxy_vfunc (Widget* proxy) { |
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82 | std::cout << "They'll want to proxy some widget!\n"; |
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83 | } |
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84 | |
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85 | /// This is currently not used (Static initialisation issue -- |
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86 | /// GLIB not initialized!), but is intended to make the |
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87 | /// menu_items over many PaperTapeColors look equal. |
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88 | static const Glib::RefPtr<SizeGroup> label_group; |
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89 | |
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90 | /// An internal signal for the color_button |
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91 | void color_set(); // CB |
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92 | /// An internal signal for the toggle_action |
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93 | void toggled(); // CB |
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94 | |
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95 | /// The color button, quick and dirty stored here for |
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96 | /// access e.g. at color_set() or set(). |
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97 | ColorButton color_button; |
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98 | |
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99 | public: |
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100 | /** |
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101 | * The official constuctor, it will return a RefPtr reference, |
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102 | * like all the Gtk::Action classes have. |
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103 | * @param view The View which called this |
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104 | * @param target The address of the LOCHSTREIFEN target pattern link |
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105 | * @param action_base_name The base name, "_color" and "_toggle" will be appended |
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106 | * @param dialog_title The title of the Color selection dialog |
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107 | * @param menu_label The pango markuped label of the ColorMenuItem |
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108 | * @param toggle_label THe label of the ToggleMenuItem. Leave empty if not toggled. |
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109 | * @returns A smart pointer to a PaperTapeColor. |
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110 | **/ |
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111 | static Glib::RefPtr<PaperTapeColor> create( |
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112 | PaperTapeView* view, |
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113 | cairo_pattern_t** target, |
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114 | const Glib::ustring& action_base_name, |
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115 | const Glib::ustring& dialog_title, |
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116 | const Glib::ustring& menu_label, |
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117 | const Glib::ustring& toggle_label |
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118 | ); |
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119 | |
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120 | /// Well, use this to find out if you need to export the |
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121 | /// toggle_action Action. It won't be useful if the element that |
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122 | /// this color represents is not intented to be turned off. |
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123 | bool is_switchable() { return switchable; } |
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124 | |
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125 | /// Give out if the element that this color represents is currently |
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126 | /// displayed. |
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127 | bool is_displayed() { return toggle_action->get_active(); } |
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128 | |
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129 | /// Get the toggle action. Don't use it if is_switchable() |
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130 | /// returns false. |
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131 | Glib::RefPtr<ToggleAction> get_toggle_action() { return toggle_action; } |
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132 | |
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133 | /** |
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134 | * This is a user function (for you!) to set the Color directly. |
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135 | * It will send all signals and update all buttons automatically. |
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136 | * Note: This won't turn on the color, if turned off currently. |
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137 | * Use get_toggle_action()->set_active(true); for that purpose. |
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138 | * |
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139 | * @param red Percentual red, from 0.0 to 1.0 |
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140 | * @param green These fields are just the same... |
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141 | * @param blue ...than cairo_pattern_create_from_rgba... |
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142 | * @param alpha ...wants them. |
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143 | **/ |
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144 | void set(double red, double green, double blue, double alpha); |
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145 | /// This makes the same, it just copies your pattern. |
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146 | void set(cairo_pattern_t* pattern); |
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147 | |
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148 | /** |
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149 | * This signal is emitted whenever the color is changed (by used input or |
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150 | * exiplit set() call) or the visibility of the element which is controlled |
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151 | * by this Color object has been toggled. |
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152 | * Therefore you can use this signal quite well to perform exposure events, |
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153 | * etc. |
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154 | * You'll recieve a pointer to this object with this signal. Don't free it. |
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155 | **/ |
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156 | sigc::signal<void,PaperTapeColor*> signal_color_changed() { return color_changed; } |
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157 | |
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158 | /// Don't know if anybody needs this function. |
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159 | MenuItem* create_menu_item() { |
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160 | return (MenuItem*)create_menu_item_vfunc(); |
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161 | } |
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162 | }; |
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163 | |
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164 | |
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165 | } // namespace |
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166 | #endif // TAPE_COLOR |
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