style.cpp

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#include "style.h"
#include <qpainter.h>
#include <qscrollbar.h>

using namespace archos;

AStyle *AStyle::get()
{
	if(s_instance == NULL)
		s_instance = new AStyle(Screen::mode());
	else if (s_instance->m_mode != Screen::mode()) {
		delete s_instance;
		s_instance = new AStyle(Screen::mode());
	}
	return s_instance;
}

AStyle::AStyle(ScreenMode mode)
	: QWindowsStyle()
	, m_mode(mode)
{
	QString path = iconpath + Screen::prefix();
	m_sgroovepix = path + "general/vslider_empty_area.png";
	m_sgroovetoppix = path + "general/vslider_cursor_top.png";
	m_sgroovebottompix = path + "general/vslider_cursor_bottom.png";
	m_sliderpix = path +"general/vslider_cursor.png";
	m_suppix = path + "general/vslider_btn_up.png";
	m_sdownpix = path + "general/vslider_btn_down.png";
	m_selection_left = path + "general/selection_left.png";
	m_selection_right = path + "general/selection_right.png";
	m_selection_mid = path + "general/selection_mid.png";
	m_panel_tl = path + "general/box_top_left_mask.png";
	m_panel_tr = path + "general/box_top_right_mask.png";
	m_panel_bl = path + "general/box_bottom_left_mask.png";
	m_panel_br = path + "general/box_bottom_right_mask.png";
	m_panel_top = path + "general/box_top_mask.png";
	m_panel_bottom = path + "general/box_bottom_mask.png";
	m_panel_left = path + "general/box_left_mask.png";
	m_panel_right = path + "general/box_right_mask.png";

	setSliderThickness(m_sgroovepix.width());
}

void AStyle::polish(QWidget *w)
{
	QWindowsStyle::polish(w);
	if(w->isA("QScrollBar")) {
		w->setMinimumWidth(m_sgroovepix.width());
		w->setFixedWidth(m_sgroovepix.width());
	}
}

void AStyle::drawSelection(QPainter *p, const QRect &r) const
{
	int x, y, w, h;
	r.rect(&x, &y, &w, &h);
	int tw= m_selection_left.width();

	p->drawPixmap(x, y, m_selection_left);
	p->drawPixmap(x + w - tw, y, m_selection_right);
	p->drawTiledPixmap(QRect(x + tw, y, w - 2* tw, m_selection_left.height()), m_selection_mid);
}

void AStyle::drawPanel(QPainter *p, const QRect &area) const
{
	int x, y, w, h;
	area.rect(&x, &y, &w, &h);

	int pw= m_panel_tl.width();
	int ph= m_panel_tl.height();

	// fill panel
	p->fillRect(QRect(x + pw, y, w - 2* pw, h), QColor(255, 255, 255));
	p->fillRect(QRect(x, y + ph, w, h  -2* ph), QColor(255, 255, 255));

	// draw corners
	p->drawPixmap(x, y, m_panel_tl);
	p->drawPixmap(x + w - pw, y, m_panel_tr);
	p->drawPixmap(x, y + h - ph, m_panel_bl);
	p->drawPixmap(x + w - pw, y + h - ph, m_panel_br);

	// draw edges
	p->drawTiledPixmap(
		x + m_panel_tl.width(), 
		y, 
		w - m_panel_tl.width() -  m_panel_tr.width(), 
		m_panel_top.height(), m_panel_top
	);
	p->drawTiledPixmap(
		x + m_panel_bl.width(), 
		y + h - m_panel_bottom.height(), 
		w - m_panel_bl.width() - m_panel_br.width(),
		m_panel_bottom.height(), m_panel_bottom
	);
	p->drawTiledPixmap(
		x + w - m_panel_tr.width(),
		y + m_panel_tr.height(),
		m_panel_right.width(),
		h - m_panel_tr.height() - m_panel_br.height(), m_panel_right
	);
	p->drawTiledPixmap(
		x,
		y +  + m_panel_tl.height(),
		m_panel_left.width(),
		h - m_panel_tl.height() - m_panel_bl.height(), m_panel_left
	);
}

void AStyle::scrollBarMetrics(const QScrollBar *s, int &smin, int &smax, int &slen, int &bdim)
{
	QWindowsStyle::scrollBarMetrics(s, smin, smax, slen, bdim);
	bdim= m_suppix.height();
}

void AStyle::drawScrollBarControls(QPainter *p, const QScrollBar *s)
{
	if(s == NULL) return;

	int sliderMin, sliderMax, sliderLength, buttonDim;
	scrollBarMetrics(s, sliderMin, sliderMax, sliderLength, buttonDim);

	int x, y, w, h;
	s->rect().rect(&x, &y, &w, &h);

	int y1= y;
	int y2= y + h - 1;
	if(s->backgroundPixmap() != NULL)
		p->drawTiledPixmap(s->rect(), *(s->backgroundPixmap()));
	p->drawPixmap(x, y1, m_suppix); y1+= m_suppix.height();
	y2-= m_sdownpix.height(); p->drawPixmap(x, y2, m_sdownpix);
	p->drawTiledPixmap(QRect(x + 1, y1, w, y2 - y1 + 1), m_sgroovepix);

	int sh= sliderLength;
	int th= y2 - y1 - sh - 8;
	if(s->maxValue() != 0)
		y1+= th* s->value()/ s->maxValue() - 1;
	p->drawPixmap(x + 1, y1, m_sgroovetoppix);
	y1+= m_sgroovetoppix.height();
	p->drawTiledPixmap(QRect(x + 1, y1, s->width(), sh), m_sliderpix);

	y1+= sh;
	p->drawPixmap(x  +1, y1, m_sgroovebottompix);
}

const QString AStyle::iconpath(ICON_PATH);
AStyle *AStyle::s_instance= NULL;