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/* -*- Mode: c++ -*- */
/***************************************************************************
* tooltip.cc
*
* Wed May 8 17:31:42 CEST 2019
* Copyright 2019 Bent Bisballe Nyeng
* deva@aasimon.org
****************************************************************************/
/*
* This file is part of DrumGizmo.
*
* DrumGizmo is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* DrumGizmo 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with DrumGizmo; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
*/
#include "tooltip.h"
#include "painter.h"
#include "font.h"
#include "window.h"
#include <iostream>
namespace GUI
{
Tooltip::Tooltip(Widget *parent)
: Widget(parent->window())
, activating_widget(parent)
{
resize(32, 32);
}
Tooltip::~Tooltip()
{
}
void Tooltip::setText(const std::string& text)
{
this->text = text;
needs_preprocessing = true;
redraw();
}
void Tooltip::resize(std::size_t width, std::size_t height)
{
Widget::resize(width, height);
}
void Tooltip::repaintEvent(RepaintEvent* repaintEvent)
{
if(needs_preprocessing)
{
preprocessText();
}
Painter p(*this);
if((width() == 0) || (height() == 0))
{
return;
}
box.setSize(width(), height());
p.drawImage(0, 0, box);
p.setColour(Colour(183.0f/255.0f, 219.0f/255.0f, 255.0f/255.0f, 1.0f));
int ypos = font.textHeight() + y_border;
for(std::size_t i = 0; i < preprocessed_text.size(); ++i)
{
if(i * font.textHeight() >= (height() - y_border - font.textHeight()))
{
break;
}
auto const& line = preprocessed_text[i];
p.drawText(x_border, ypos, font, line);
ypos += font.textHeight();
}
}
void Tooltip::preprocessText()
{
std::vector<std::string> lines;
preprocessed_text.clear();
std::string text = this->text;
// Handle tab characters
for(std::size_t i = 0; i < text.length(); ++i)
{
char ch = text.at(i);
if(ch == '\t')
{
text.erase(i, 1);
text.insert(i, 4, ' ');
}
}
// Handle "\r"
for(std::size_t i = 0; i < text.length(); ++i)
{
char ch = text.at(i);
if(ch == '\r')
{
text.erase(i, 1);
}
}
// Handle new line characters
std::size_t pos = 0;
do
{
pos = text.find("\n");
lines.push_back(text.substr(0, pos));
text = text.substr(pos + 1);
} while(pos != std::string::npos);
max_text_width = 0;
total_text_height = 0;
for(auto const& line: lines)
{
std::string valid;
std::string current;
for(auto c: line)
{
current += c;
if(c == ' ')
{
valid.append(current.substr(valid.size()));
}
}
preprocessed_text.push_back(current);
max_text_width = std::max(max_text_width, font.textWidth(line));
total_text_height += font.textHeight(line);
}
}
void Tooltip::mouseLeaveEvent()
{
hide();
}
void Tooltip::show()
{
if(needs_preprocessing)
{
preprocessText();
}
resize(max_text_width + 2*x_border, total_text_height + 2*y_border);
int x = activating_widget->translateToWindowX();
int y = activating_widget->translateToWindowY();
if(x + width() > window()->width())
{
x -= width();
x += activating_widget->width();
}
if(y + height() > window()->height())
{
y -= height();
y += activating_widget->height();
}
move(x, y);
Widget::show();
}
} // GUI::
|
