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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*/
#include <gtk/gtk.h>
#include <cmath>
#include <iostream>
#include "gtv-calc-header-bar.hxx"
#include <boost/property_tree/ptree.hpp>
#include <o3tl/unreachable.hxx>
namespace {
struct GtvCalcHeaderBarPrivateImpl
{
/// Stores size and content of a single row header.
struct Header
{
int m_nSize;
std::string m_aText;
Header(int nSize, const std::string& rText)
: m_nSize(nSize),
m_aText(rText)
{ }
};
std::vector<Header> m_aHeaders;
CalcHeaderType m_eType;
GtvCalcHeaderBarPrivateImpl()
: m_eType(CalcHeaderType::NONE)
{ }
};
struct GtvCalcHeaderBarPrivate
{
GtvCalcHeaderBarPrivateImpl* m_pImpl;
GtvCalcHeaderBarPrivateImpl* operator->()
{
return m_pImpl;
}
};
}
#if defined __clang__
#if __has_warning("-Wdeprecated-volatile")
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wdeprecated-volatile"
#endif
#endif
G_DEFINE_TYPE_WITH_PRIVATE(GtvCalcHeaderBar, gtv_calc_header_bar, GTK_TYPE_DRAWING_AREA);
#if defined __clang__
#if __has_warning("-Wdeprecated-volatile")
#pragma clang diagnostic pop
#endif
#endif
const int ROW_HEADER_WIDTH = 50;
const int COLUMN_HEADER_HEIGHT = 20;
static GtvCalcHeaderBarPrivate&
getPrivate(GtvCalcHeaderBar* headerbar)
{
return *static_cast<GtvCalcHeaderBarPrivate*>(gtv_calc_header_bar_get_instance_private(headerbar));
}
static void
gtv_calc_header_bar_init(GtvCalcHeaderBar* bar)
{
GtvCalcHeaderBarPrivate& priv = getPrivate(bar);
priv.m_pImpl = new GtvCalcHeaderBarPrivateImpl();
}
static void
gtv_calc_header_bar_finalize(GObject* object)
{
GtvCalcHeaderBarPrivate& priv = getPrivate(GTV_CALC_HEADER_BAR(object));
delete priv.m_pImpl;
priv.m_pImpl = nullptr;
G_OBJECT_CLASS (gtv_calc_header_bar_parent_class)->finalize (object);
}
static void gtv_calc_header_bar_draw_text(cairo_t* pCairo, const GdkRectangle& rRectangle, const std::string& rText)
{
cairo_text_extents_t extents;
cairo_text_extents(pCairo, rText.c_str(), &extents);
// Cairo reference point for text is the bottom left corner.
cairo_move_to(pCairo, rRectangle.x + rRectangle.width / 2 - extents.width / 2, rRectangle.y + rRectangle.height / 2 + extents.height / 2);
cairo_show_text(pCairo, rText.c_str());
}
static bool gtv_calc_header_bar_draw_impl(GtkWidget* pWidget, cairo_t* pCairo)
{
GtvCalcHeaderBar* self = GTV_CALC_HEADER_BAR(pWidget);
GtvCalcHeaderBarPrivate& priv = getPrivate(GTV_CALC_HEADER_BAR(self));
cairo_set_source_rgb(pCairo, 0, 0, 0);
int nPrevious = 0;
for (const GtvCalcHeaderBarPrivateImpl::Header& rHeader : priv->m_aHeaders)
{
GdkRectangle aRectangle;
if (priv->m_eType == CalcHeaderType::ROW)
{
aRectangle.x = 0;
aRectangle.y = nPrevious;
aRectangle.width = ROW_HEADER_WIDTH - 1;
aRectangle.height = rHeader.m_nSize - nPrevious;
// Left line.
cairo_rectangle(pCairo, aRectangle.x, aRectangle.y, 1, aRectangle.height);
cairo_fill(pCairo);
// Bottom line.
cairo_rectangle(pCairo, aRectangle.x, aRectangle.y + aRectangle.height, aRectangle.width, 1);
cairo_fill(pCairo);
// Right line.
cairo_rectangle(pCairo, aRectangle.width, aRectangle.y, 1, aRectangle.height);
cairo_fill(pCairo);
}
else if (priv->m_eType == CalcHeaderType::COLUMN)
{
aRectangle.x = nPrevious;
aRectangle.y = 0;
aRectangle.width = rHeader.m_nSize - nPrevious;
aRectangle.height = COLUMN_HEADER_HEIGHT - 1;
// Top line.
cairo_rectangle(pCairo, aRectangle.x, aRectangle.y, aRectangle.width, 1);
cairo_fill(pCairo);
// Right line.
cairo_rectangle(pCairo, aRectangle.x + aRectangle.width , aRectangle.y, 1, aRectangle.height);
cairo_fill(pCairo);
// Bottom line.
cairo_rectangle(pCairo, aRectangle.x, aRectangle.height, aRectangle.width, 1);
cairo_fill(pCairo);
}
else
{
O3TL_UNREACHABLE; // should never happen
}
gtv_calc_header_bar_draw_text(pCairo, aRectangle, rHeader.m_aText);
nPrevious = rHeader.m_nSize;
if (rHeader.m_nSize > self->m_nSizePixel)
break;
}
if (priv->m_aHeaders.empty() && priv->m_eType == CalcHeaderType::CORNER)
{
GdkRectangle aRectangle;
aRectangle.x = 0;
aRectangle.y = 0;
aRectangle.width = ROW_HEADER_WIDTH - 1;
aRectangle.height = COLUMN_HEADER_HEIGHT - 1;
cairo_rectangle(pCairo, aRectangle.x, aRectangle.y, aRectangle.width, aRectangle.height);
cairo_stroke(pCairo);
}
return false;
}
static gboolean
gtv_calc_header_bar_draw(GtkWidget* bar, cairo_t* pCairo)
{
return gtv_calc_header_bar_draw_impl(bar, pCairo);
}
static void
gtv_calc_header_bar_class_init(GtvCalcHeaderBarClass* klass)
{
GTK_WIDGET_CLASS(klass)->draw = gtv_calc_header_bar_draw;
G_OBJECT_CLASS(klass)->finalize = gtv_calc_header_bar_finalize;
}
void gtv_calc_header_bar_configure(GtvCalcHeaderBar* bar, const boost::property_tree::ptree* values)
{
GtvCalcHeaderBarPrivate& priv = getPrivate(bar);
priv->m_aHeaders.clear();
if (values)
{
boost::property_tree::ptree val = *values;
try
{
for (const boost::property_tree::ptree::value_type& rValue : val)
{
int nSize = std::round(std::atof(rValue.second.get<std::string>("size").c_str()));
if (nSize >= bar->m_nPositionPixel)
{
const int nScrolledSize = nSize - bar->m_nPositionPixel;
GtvCalcHeaderBarPrivateImpl::Header aHeader(nScrolledSize, rValue.second.get<std::string>("text"));
priv->m_aHeaders.push_back(aHeader);
}
}
}
catch (boost::property_tree::ptree_bad_path& rException)
{
std::cerr << "gtv_calc_header_bar_configure: " << rException.what() << std::endl;
}
}
gtk_widget_show(GTK_WIDGET(bar));
gtk_widget_queue_draw(GTK_WIDGET(bar));
}
void
gtv_calc_header_bar_set_type_and_width(GtvCalcHeaderBar* bar, CalcHeaderType eType)
{
// TODO: Install type property for this class
GtvCalcHeaderBarPrivate& priv = getPrivate(bar);
priv->m_eType = eType;
if (eType == CalcHeaderType::ROW)
gtk_widget_set_size_request(GTK_WIDGET(bar), ROW_HEADER_WIDTH, -1);
else if (eType == CalcHeaderType::COLUMN)
gtk_widget_set_size_request(GTK_WIDGET(bar), -1, COLUMN_HEADER_HEIGHT);
}
GtkWidget*
gtv_calc_header_bar_new()
{
return GTK_WIDGET(g_object_new(GTV_TYPE_CALC_HEADER_BAR,
nullptr));
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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