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// TextButton.cc for Fluxbox Window Manager
// Copyright (c) 2003 - 2006 Henrik Kinnunen (fluxgen at fluxbox dot org)
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the "Software"),
// to deal in the Software without restriction, including without limitation
// the rights to use, copy, modify, merge, publish, distribute, sublicense,
// and/or sell copies of the Software, and to permit persons to whom the
// Software is furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
// THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
// DEALINGS IN THE SOFTWARE.
#include "TextButton.hh"
#include "TextUtils.hh"
#include "Font.hh"
#include "GContext.hh"
namespace FbTk {
TextButton::TextButton(const FbTk::FbWindow &parent,
FbTk::Font &font,
const FbTk::BiDiString &text):
FbTk::Button(parent, 0, 0, 10, 10),
m_font(&font),
m_text(text),
m_justify(FbTk::LEFT),
m_orientation(FbTk::ROT0),
m_bevel(1),
m_left_padding(0),
m_right_padding(0) {
setRenderer(*this);
}
void TextButton::setJustify(FbTk::Justify just) {
m_justify = just;
}
bool TextButton::setOrientation(FbTk::Orientation orient) {
if (orient == m_orientation
|| !m_font->validOrientation(orient))
return false;
invalidateBackground();
if (((m_orientation == FbTk::ROT0 || m_orientation == FbTk::ROT180) &&
(orient == FbTk::ROT90 || orient == FbTk::ROT270)) ||
((m_orientation == FbTk::ROT90 || m_orientation == FbTk::ROT270) &&
(orient == FbTk::ROT0 || orient == FbTk::ROT180))) {
m_orientation = orient;
resize(height(), width());
} else {
m_orientation = orient;
}
return true;
}
void TextButton::setText(const FbTk::BiDiString &text) {
if (m_text.logical() != text.logical()) {
m_text = text;
updateBackground(false);
clear();
}
}
void TextButton::setFont(FbTk::Font &font) {
// no need to set new font if it's the same
if (&font == m_font)
return;
m_font = &font;
font.validOrientation(m_orientation); // load the orientation!
}
void TextButton::setTextPaddingLeft(unsigned int leftpadding) {
m_left_padding = leftpadding;
}
void TextButton::setTextPaddingRight(unsigned int rightpadding) {
m_right_padding = rightpadding;
}
void TextButton::setTextPadding(unsigned int padding) {
setTextPaddingLeft(padding/2);
setTextPaddingRight(padding/2);
}
/// clear window and redraw text
void TextButton::clear() {
TextButton::clearArea(0, 0, width(), height());
}
void TextButton::clearArea(int x, int y,
unsigned int width, unsigned int height,
bool exposure) {
Button::clearArea(x, y, width, height, exposure);
}
unsigned int TextButton::textWidth() const {
return font().textWidth(text());
}
unsigned int TextButton::preferredWidth() const {
return m_bevel + m_left_padding + m_right_padding + textWidth();
}
void TextButton::renderForeground(FbWindow &win, FbDrawable &drawable) {
// (win should always be *this, no need to check)
drawText(0, 0, &drawable);
}
void TextButton::drawText(int x_offset, int y_offset, FbDrawable *drawable) {
if (drawable == 0)
drawable = this;
const FbString& visual = text().visual();
unsigned int textlen = visual.size();
unsigned int button_width = width();
unsigned int button_height = height();
int padding = m_left_padding + m_right_padding;
int n_pixels = static_cast<int>(button_width) - x_offset;
if (m_orientation == ROT90 || m_orientation == ROT270) {
n_pixels = static_cast<int>(button_height) - y_offset;
}
n_pixels -= padding;
// text is to small to render
if (n_pixels <= bevel()) {
return;
}
translateSize(m_orientation, button_width, button_height);
// horizontal alignment, cut off text if needed
int align_x = FbTk::doAlignment(n_pixels,
bevel(), justify(), font(),
visual.data(), visual.size(),
textlen); // return new text len
//
// we center the text vertically. to do this we have to nudge the
// baseline a little bit down so the "middle" of the glyph is placed
// on the middle of the button. we "assume", that ascent/2 is roughly
// the middle of the glyph. example:
//
// +== ascent <--------->== +=====================
// | | | |
// | | ggggg | | ascent <--------->
// | | g gg | | | |
// | baseline < glyph | | | ggggg |
// | | g | -- middle of button -- | | g gg |
// | descent < ggggg | | baseline < glyph |
// | height |_________| | | g |
// | | descent < ggggg |
// | | height |_________|
// | |
// +======================= +=====================
//
// ascent = 4
// button_height = 11
// baseline = (11 + 4) / 2 - 1 = 6
//
int baseline_x = align_x + x_offset + m_left_padding;
int baseline_y = ((button_height + font().ascent()) / 2) - 1 + y_offset;
// TODO: remove debug output fprintf(stderr, "%d | %d %d %d\n", height(), font().height(), font().ascent(), font().descent());
// give it ROT0 style coords
translateCoords(m_orientation, baseline_x, baseline_y, button_width, button_height);
font().drawText(*drawable, screenNumber(), gc(),
visual.c_str(), textlen,
baseline_x, baseline_y, m_orientation);
}
bool TextButton::textExceeds(int x_offset) {
const FbString& visual = text().visual();
unsigned int textlen = visual.size();
unsigned int button_width = width();
unsigned int button_height = height();
translateSize(m_orientation, button_width, button_height);
FbTk::doAlignment(button_width - x_offset - m_left_padding - m_right_padding,
bevel(), justify(), font(), visual.data(), visual.size(),
textlen); // return new text len
return visual.size() > textlen;
}
void TextButton::exposeEvent(XExposeEvent &event) {
clearArea(event.x, event.y, event.width, event.height, false);
}
} // end namespace FbTk
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