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1 /*
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2 GoatKit - a themable/animated widget toolkit for games
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3 Copyright (C) 2014 John Tsiombikas <nuclear@member.fsf.org>
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4
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5 This program is free software: you can redistribute it and/or modify
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6 it under the terms of the GNU Lesser General Public License as published by
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7 the Free Software Foundation, either version 3 of the License, or
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8 (at your option) any later version.
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9
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10 This program is distributed in the hope that it will be useful,
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11 but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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13 GNU Lesser General Public License for more details.
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14
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15 You should have received a copy of the GNU Lesser General Public License
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16 along with this program. If not, see <http://www.gnu.org/licenses/>.
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17 */
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18 #ifndef GOATKIT_WIDGET_H_
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19 #define GOATKIT_WIDGET_H_
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20
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21 #include "vec.h"
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22 #include "event.h"
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23
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24 namespace goatkit {
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25
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26 struct BBox {
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27 Vec2 bmin, bmax;
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28 };
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29
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30 class Screen;
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31 class Widget;
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32 struct WidgetImpl;
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33
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34 typedef void (*EventCallback)(Widget*, const Event &ev, void *cls);
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35
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36 class Widget {
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37 protected:
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38 WidgetImpl *widget;
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39
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40 virtual void set_screen(Screen *scr);
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41 Screen *get_screen() const;
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42
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43 public:
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44 Widget();
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45 virtual ~Widget();
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46
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47 virtual const char *get_type_name() const;
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48
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49 virtual void set_name(const char *name);
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50 virtual const char *get_name() const;
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51
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52 virtual void set_text(const char *text);
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53 virtual const char *get_text() const;
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54
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55 virtual void show();
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56 virtual void hide();
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57 virtual float get_visibility() const;
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58 virtual bool is_visible() const;
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59 virtual void set_visibility_transition(long msec);
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60 virtual long get_visibility_transition() const;
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61
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62 virtual void activate();
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63 virtual void deactivate();
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64 virtual float get_active() const;
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65 virtual bool is_active() const;
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66 virtual void set_active_transition(long msec);
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67 virtual long get_active_transition() const;
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68
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69 virtual void press();
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70 virtual void release();
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71 virtual float get_pressed() const;
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72 virtual bool is_pressed() const;
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73 virtual void set_press_transition(long msec);
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74 virtual long get_press_transition() const;
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75
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76 virtual void mousein();
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77 virtual void mouseout();
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78 virtual float get_under_mouse() const;
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79 virtual bool is_under_mouse() const;
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80 virtual void set_hover_transition(long msec);
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81 virtual long get_hover_transition() const;
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82
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83 // input focus, managed by the screen
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84 virtual bool can_focus() const;
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85 virtual void focusin();
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86 virtual void focusout();
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87 virtual float get_focus() const;
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88 virtual bool is_focused() const;
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89 virtual void set_focus_transition(long msec);
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90 virtual long get_focus_transition() const;
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91
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92 virtual void set_position(float x, float y);
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93 virtual void set_position(const Vec2 &pos);
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94 virtual const Vec2 &get_position() const;
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95
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96 virtual void set_size(float x, float y);
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97 virtual void set_size(const Vec2 &size);
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98 virtual const Vec2 get_size() const;
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99
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100 virtual const BBox &get_box() const;
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101
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102 virtual bool hit_test(const Vec2 &pt) const;
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103
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104 virtual void draw() const;
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105
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106 // low level events
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107 virtual void on_mouse_button(const ButtonEvent &ev);
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108 virtual void on_mouse_motion(const MotionEvent &ev);
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109 virtual void on_mouse_focus(const FocusEvent &ev);
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110 virtual void on_key(const KeyEvent &ev);
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111
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112 // high level events
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113 virtual void on_click();
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114 virtual void on_double_click();
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115 virtual void on_change();
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116 //virtual void on_drag_move(int bn, const Vec2 &pt);
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117 //virtual void on_drag_release(int bn, const Vec2 &pt);
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118
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119 // event dispatcher
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120 virtual void handle_event(const Event &ev);
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121
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122 // external callback setting
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123 virtual void set_callback(EventType evtype, EventCallback func, void *cls = 0);
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124
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125 friend class Screen;
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126 };
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127
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128 }
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129
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130 #endif // GOATKIT_WIDGET_H_
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