// Copyright (C) 2008 Davis E. King (davis@dlib.net), and Nils Labugt
// License: Boost Software License See LICENSE.txt for the full license.
#ifndef DLIB_WIDGETs_STYLE_
#define DLIB_WIDGETs_STYLE_
#include "../algs.h"
#include "style_abstract.h"
#include "../gui_core.h"
#include "canvas_drawing.h"
#include <string>
#include <sstream>
#include "../unicode.h"
#include "../array2d.h"
#include "../pixel.h"
#include "fonts.h"
namespace dlib
{
// ----------------------------------------------------------------------------------------
// ----------------------------------------------------------------------------------------
// button styles
// ----------------------------------------------------------------------------------------
// ----------------------------------------------------------------------------------------
class button_style
{
public:
button_style()
{
}
virtual ~button_style()
{}
virtual bool redraw_on_mouse_over (
) const { return false; }
virtual rectangle get_invalidation_rect (
const rectangle& rect
) const { return rect; }
virtual rectangle get_min_size (
const ustring& name,
const font& mfont
) const = 0;
virtual void draw_button (
const canvas& c,
const rectangle& rect,
const bool enabled,
const font& mfont,
const long lastx,
const long lasty,
const ustring& name,
const bool is_depressed
) const = 0;
};
// ----------------------------------------------------------------------------------------
class button_style_default : public button_style
{
public:
button_style_default () : padding(4), name_width(0) {}
virtual void draw_button (
const canvas& c,
const rectangle& rect,
const bool enabled,
const font& mfont,
const long lastx,
const long lasty,
const ustring& name,
const bool is_depressed
) const;
virtual rectangle get_min_size (
const ustring& name,
const font& mfont
) const;
private:
// this is the minimum amount of padding that can separate the name from the
// edge of the button
const unsigned long padding;
// this is the width of the name string
mutable unsigned long name_width;
};
// ----------------------------------------------------------------------------------------
class button_style_toolbar1 : public button_style
{
public:
button_style_toolbar1 () : padding(4), name_width(0) {}
virtual void draw_button (
const canvas& c,
const rectangle& rect,
const bool enabled,
const font& mfont,
const long lastx,
const long lasty,
const ustring& name,
const bool is_depressed
) const;
virtual rectangle get_invalidation_rect (
const rectangle& rect
) const
{
rectangle temp(rect);
temp.left() -= 2;
temp.top() -= 2;
temp.right() += 2;
temp.bottom() += 2;
return temp;
}
virtual bool redraw_on_mouse_over (
) const { return true; }
virtual rectangle get_min_size (
const ustring& name,
const font& mfont
) const;
private:
// this is the minimum amount of padding that can separate the name from the
// edge of the button
const unsigned long padding;
// this is the width of the name string
mutable unsigned long name_width;
};
// ----------------------------------------------------------------------------------------
class button_style_toolbar_icon1 : public button_style
{
public:
template <typename image_type>
button_style_toolbar_icon1 (const image_type& img_, unsigned long pad = 6) : padding(pad)
{
assign_image(img_mouseover,img_);
make_images();
}
button_style_toolbar_icon1( const button_style_toolbar_icon1& item): button_style(item), padding(item.padding)
{
assign_image(img_mouseover, item.img_mouseover);
assign_image(img_normal, item.img_normal);
assign_image(img_disabled, item.img_disabled);
}
virtual void draw_button (
const canvas& c,
const rectangle& rect,
const bool enabled,
const font& mfont,
const long lastx,
const long lasty,
const ustring& name,
const bool is_depressed
) const;
virtual bool redraw_on_mouse_over (
) const { return true; }
virtual rectangle get_min_size (
const ustring& name,
const font& mfont
) const;
private:
void make_images (
)
{
// make the disabled image grayscale and make both non-mouseover images have weaker alpha channels
img_disabled.set_size(img_mouseover.nr(), img_mouseover.nc());
img_normal.set_size(img_mouseover.nr(), img_mouseover.nc());
for (long r = 0; r < img_mouseover.nr(); ++r)
{
for (long c = 0; c < img_mouseover.nc(); ++c)
{
rgb_alpha_pixel p = img_mouseover[r][c];
long avg = p.red;
avg += p.green;
avg += p.blue;
avg /= 3;
if (p.alpha > 40)
p.alpha -= 40;
else
p.alpha = 0;
img_normal[r][c] = p;
if (p.alpha > 80)
p.alpha -= 80;
else
p.alpha = 0;
p.red = avg;
p.green = avg;
p.blue = avg;
img_disabled[r][c] = p;
}
}
}
array2d<rgb_alpha_pixel> img_mouseover;
array2d<rgb_alpha_pixel> img_normal;
array2d<rgb_alpha_pixel> img_disabled;
// this is the minimum amount of padding that can separate the name from the
// edge of the button
const unsigned long padding;
};
// ----------------------------------------------------------------------------------------
class button_style_arrow : public button_style
{
public:
enum arrow_direction
{
UP,
DOWN,
LEFT,
RIGHT
};
button_style_arrow (
arrow_direction dir_
) : dir(dir_) {}
virtual void draw_button (
const canvas& c,
const rectangle& rect,
const bool enabled,
const font& mfont,
const long lastx,
const long lasty,
const ustring& name,
const bool is_depressed
) const;
virtual rectangle get_min_size (
const ustring& ,
const font&
) const { return rectangle(); }
private:
arrow_direction dir;
};
// ----------------------------------------------------------------------------------------
// ----------------------------------------------------------------------------------------
// toggle button styles
// ----------------------------------------------------------------------------------------
// ----------------------------------------------------------------------------------------
class toggle_button_style
{
public:
toggle_button_style()
{
}
virtual ~toggle_button_style()
{}
virtual bool redraw_on_mouse_over (
) const { return false; }
virtual rectangle get_min_size (
const ustring& name,
const font& mfont
) const = 0;
virtual void draw_toggle_button (
const canvas& c,
const rectangle& rect,
const bool enabled,
const font& mfont,
const long lastx,
const long lasty,
const ustring& name,
const bool is_depressed,
const bool is_checked
) const = 0;
};
// ----------------------------------------------------------------------------------------
class toggle_button_style_default : public toggle_button_style
{
public:
toggle_button_style_default () : padding(4), name_width(0) {}
virtual void draw_toggle_button (
const canvas& c,
const rectangle& rect,
const bool enabled,
const font& mfont,
const long lastx,
const long lasty,
const ustring& name,
const bool is_depressed,
const bool is_checked
) const;
virtual rectangle get_min_size (
const ustring& name,
const font& mfont
) const;
private:
// this is the minimum amount of padding that can separate the name from the
// edge of the button
const unsigned long padding;
// this is the width of the name string
mutable unsigned long name_width;
};
// ----------------------------------------------------------------------------------------
class toggle_button_style_check_box : public toggle_button_style
{
public:
virtual void draw_toggle_button (
const canvas& c,
const rectangle& rect,
const bool enabled,
const font& mfont,
const long lastx,
const long lasty,
const ustring& name,
const bool is_depressed,
const bool is_checked
) const;
virtual rectangle get_min_size (
const ustring& name,
const font& mfont
) const;
};
// ----------------------------------------------------------------------------------------
class toggle_button_style_radio_button : public toggle_button_style
{
public:
virtual void draw_toggle_button (
const canvas& c,
const rectangle& rect,
const bool enabled,
const font& mfont,
const long lastx,
const long lasty,
const ustring& name,
const bool is_depressed,
const bool is_checked
) const;
virtual rectangle get_min_size (
const ustring& name,
const font& mfont
) const;
};
// ----------------------------------------------------------------------------------------
// ----------------------------------------------------------------------------------------
// scroll_bar styles
// ----------------------------------------------------------------------------------------
// ----------------------------------------------------------------------------------------
class scroll_bar_style
{
public:
virtual ~scroll_bar_style() {}
virtual bool redraw_on_mouse_over_slider (
) const { return false; }
virtual long get_width (
) const = 0;
virtual long get_slider_length (
long total_length,
long max_pos
) const = 0;
virtual long get_button_length (
long total_length,
long max_pos
) const = 0;
virtual void draw_scroll_bar_background (
const canvas& c,
const rectangle& rect,
const bool enabled,
const long lastx,
const long lasty,
const bool is_depressed
) const = 0;
virtual void draw_scroll_bar_slider (
const canvas& c,
const rectangle& rect,
const bool enabled,
const long lastx,
const long lasty,
const bool is_being_dragged
) const = 0;
};
// ----------------------------------------------------------------------------------------
class scroll_bar_style_default : public scroll_bar_style
{
public:
button_style_arrow get_up_button_style (
) const { return button_style_arrow(button_style_arrow::UP); }
button_style_arrow get_down_button_style (
) const { return button_style_arrow(button_style_arrow::DOWN); }
button_style_arrow get_left_button_style (
) const { return button_style_arrow(button_style_arrow::LEFT); }
button_style_arrow get_right_button_style (
) const { return button_style_arrow(button_style_arrow::RIGHT); }
virtual long get_width (
) const { return 16; }
virtual long get_slider_length (
long total_length,
long max_pos
) const;
virtual long get_button_length (
long total_length,
long max_pos
) const;
virtual void draw_scroll_bar_background (
const canvas& c,
const rectangle& rect,
const bool enabled,
const long lastx,
const long lasty,
const bool is_depressed
) const;
virtual void draw_scroll_bar_slider (
const canvas& c,
const rectangle& rect,
const bool enabled,
const long lastx,
const long lasty,
const bool is_being_dragged
) const;
};
// ----------------------------------------------------------------------------------------
// ----------------------------------------------------------------------------------------
// scrollable_region styles
// ----------------------------------------------------------------------------------------
// ----------------------------------------------------------------------------------------
class scrollable_region_style
{
public:
virtual ~scrollable_region_style() {}
virtual long get_border_size (
) const = 0;
virtual void draw_scrollable_region_border (
const canvas& c,
const rectangle& rect,
const bool enabled
) const = 0;
};
// ----------------------------------------------------------------------------------------
class scrollable_region_style_default : public scrollable_region_style
{
public:
scroll_bar_style_default get_horizontal_scroll_bar_style (
) const { return scroll_bar_style_default(); }
scroll_bar_style_default get_vertical_scroll_bar_style (
) const { return scroll_bar_style_default(); }
virtual long get_border_size (
) const { return 2; }
virtual void draw_scrollable_region_border (
const canvas& c,
const rectangle& rect,
const bool
) const { draw_sunken_rectangle(c,rect); }
};
// ----------------------------------------------------------------------------------------
// ----------------------------------------------------------------------------------------
// list_box styles
// ----------------------------------------------------------------------------------------
// ----------------------------------------------------------------------------------------
class list_box_style
{
public:
virtual ~list_box_style() {}
virtual void draw_list_box_background (
const canvas& c,
const rectangle& display_rect,
const bool enabled
) const = 0;
virtual void draw_list_box_item (
const canvas& c,
const rectangle& rect,
const rectangle& display_rect,
const bool enabled,
const font& mfont,
const std::string& text,
const bool is_selected
) const = 0;
virtual void draw_list_box_item (
const canvas& c,
const rectangle& rect,
const rectangle& display_rect,
const bool enabled,
const font& mfont,
const std::wstring& text,
const bool is_selected
) const = 0;
virtual void draw_list_box_item (
const canvas& c,
const rectangle& rect,
const rectangle& display_rect,
const bool enabled,
const font& mfont,
const ustring& text,
const bool is_selected
) const = 0;
};
// ----------------------------------------------------------------------------------------
class list_box_style_default : public list_box_style
{
public:
scrollable_region_style_default get_scrollable_region_style (
) const { return scrollable_region_style_default(); }
virtual void draw_list_box_item (
const canvas& c,
const rectangle& rect,
const rectangle& display_rect,
const bool enabled,
const font& mfont,
const std::string& text,
const bool is_selected
) const { draw_list_box_item_template(c,rect,display_rect, enabled, mfont, text, is_selected); }
virtual void draw_list_box_item (
const canvas& c,
const rectangle& rect,
const rectangle& display_rect,
const bool enabled,
const font& mfont,
const std::wstring& text,
const bool is_selected
) const { draw_list_box_item_template(c,rect,display_rect, enabled, mfont, text, is_selected); }
virtual void draw_list_box_item (
const canvas& c,
const rectangle& rect,
const rectangle& display_rect,
const bool enabled,
const font& mfont,
const ustring& text,
const bool is_selected
) const { draw_list_box_item_template(c,rect,display_rect, enabled, mfont, text, is_selected); }
template <typename string_type>
void draw_list_box_item_template (
const canvas& c,
const rectangle& rect,
const rectangle& display_rect,
const bool enabled,
const font& mfont,
const string_type& text,
const bool is_selected
) const
{
if (is_selected)
{
if (enabled)
fill_rect_with_vertical_gradient(c,rect,rgb_pixel(110,160,255), rgb_pixel(100,130,250),display_rect);
else
fill_rect_with_vertical_gradient(c,rect,rgb_pixel(140,190,255), rgb_pixel(130,160,250),display_rect);
}
if (enabled)
mfont.draw_string(c,rect,text,rgb_pixel(0,0,0),0,std::string::npos,display_rect);
else
mfont.draw_string(c,rect,text,rgb_pixel(128,128,128),0,std::string::npos,display_rect);
}
virtual void draw_list_box_background (
const canvas& c,
const rectangle& display_rect,
const bool enabled
) const
{
if (enabled)
{
// first fill our area with white
fill_rect(c, display_rect,rgb_pixel(255,255,255));
}
else
{
// first fill our area with gray
fill_rect(c, display_rect,rgb_pixel(212,208,200));
}
}
};
// ----------------------------------------------------------------------------------------
// ----------------------------------------------------------------------------------------
// text_box styles
// ----------------------------------------------------------------------------------------
// ----------------------------------------------------------------------------------------
class text_box_style
{
public:
text_box_style()
{
}
virtual ~text_box_style()
{}
virtual unsigned long get_padding (
const font& mfont
) const = 0;
virtual void draw_text_box (
const canvas& c,
const rectangle& display_rect,
const rectangle& text_rect,
const bool enabled,
const font& mfont,
const ustring& text,
const rectangle& cursor_rect,
const rgb_pixel& text_color,
const rgb_pixel& bg_color,
const bool has_focus,
const bool cursor_visible,
const long highlight_start,
const long highlight_end
) const = 0;
};
// ----------------------------------------------------------------------------------------
class text_box_style_default : public text_box_style
{
public:
text_box_style_default()
{
}
scrollable_region_style_default get_scrollable_region_style (
) const { return scrollable_region_style_default(); }
virtual ~text_box_style_default()
{}
virtual unsigned long get_padding (
const font&
) const { return 1; }
virtual void draw_text_box (
const canvas& c,
const rectangle& display_rect,
const rectangle& text_rect,
const bool enabled,
const font& mfont,
const ustring& text,
const rectangle& cursor_rect,
const rgb_pixel& text_color,
const rgb_pixel& bg_color,
const bool has_focus,
const bool cursor_visible,
const long highlight_start,
const long highlight_end
) const;
};
// ----------------------------------------------------------------------------------------
// ----------------------------------------------------------------------------------------
// text_field styles
// ----------------------------------------------------------------------------------------
// ----------------------------------------------------------------------------------------
class text_field_style
{
public:
text_field_style()
{
}
virtual ~text_field_style()
{}
virtual unsigned long get_padding (
const font& mfont
) const = 0;
virtual void draw_text_field (
const canvas& c,
const rectangle& rect,
const rectangle& text_rect,
const bool enabled,
const font& mfont,
const ustring& text,
const unsigned long cursor_x,
const unsigned long text_pos,
const rgb_pixel& text_color,
const rgb_pixel& bg_color,
const bool has_focus,
const bool cursor_visible,
const long highlight_start,
const long highlight_end
) const = 0;
};
// ----------------------------------------------------------------------------------------
class text_field_style_default : public text_field_style
{
public:
text_field_style_default()
{
}
virtual ~text_field_style_default()
{}
virtual unsigned long get_padding (
const font& mfont
) const;
virtual void draw_text_field (
const canvas& c,
const rectangle& rect,
const rectangle& text_rect,
const bool enabled,
const font& mfont,
const ustring& text,
const unsigned long cursor_x,
const unsigned long text_pos,
const rgb_pixel& text_color,
const rgb_pixel& bg_color,
const bool has_focus,
const bool cursor_visible,
const long highlight_start,
const long highlight_end
) const;
};
// ----------------------------------------------------------------------------------------
}
#ifdef NO_MAKEFILE
#include "style.cpp"
#endif
#endif // DLIB_WIDGETs_STYLE_