1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
|
/*
* Copyright (C) 2002-2016 by the Widelands Development Team
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
*/
#ifndef WL_UI_BASIC_MULTILINETEXTAREA_H
#define WL_UI_BASIC_MULTILINETEXTAREA_H
#include <memory>
#include "graphic/align.h"
#include "graphic/color.h"
#include "graphic/richtext.h"
#include "graphic/text_layout.h"
#include "ui_basic/panel.h"
#include "ui_basic/scrollbar.h"
namespace UI {
struct Scrollbar;
/**
* This defines an area, where a text can easily be printed.
* The textarea transparently handles explicit line-breaks and word wrapping.
*/
struct MultilineTextarea : public Panel {
enum class ScrollMode {
kNoScrolling, // Expand the height instead of showing a scroll bar
kScrollNormal, // (default) only explicit scrolling
kScrollNormalForced, // forced scrolling
kScrollLog, // follow the bottom of the text
kScrollLogForced // follow the bottom of the text, and forced
};
MultilineTextarea(
Panel* const parent,
const int32_t x,
const int32_t y,
const uint32_t w,
const uint32_t h,
const std::string& text = std::string(),
const Align = UI::Align::kLeft,
MultilineTextarea::ScrollMode scroll_mode = MultilineTextarea::ScrollMode::kScrollNormal);
const std::string& get_text() const {
return text_;
}
void set_text(const std::string&);
uint32_t get_eff_w() const {
return scrollbar_.is_enabled() ? get_w() - Scrollbar::kSize : get_w();
}
void set_color(RGBColor fg) {
color_ = fg;
}
void force_new_renderer() {
force_new_renderer_ = true;
}
// Drawing and event handlers
void draw(RenderTarget&) override;
bool handle_mousewheel(uint32_t which, int32_t x, int32_t y) override;
void scroll_to_top();
protected:
void layout() override;
private:
void recompute();
void scrollpos_changed(int32_t pixels);
/**
* This prepares a non-richtext text for rendering. It escapes the source text and
* turns '\\n' into '<br>' tags as needed, then creates the richtext style wrappers.
*/
std::string make_richtext();
std::string text_;
RGBColor color_;
Align align_;
bool force_new_renderer_;
bool use_old_renderer_;
RichText rt;
Scrollbar scrollbar_;
ScrollMode scrollmode_;
};
}
#endif // end of include guard: WL_UI_BASIC_MULTILINETEXTAREA_H
|
