1 files changed, 236 insertions, 0 deletions
diff --git a/libreofficekit/qa/gtktiledviewer/gtv-calc-header-bar.cxx b/libreofficekit/qa/gtktiledviewer/gtv-calc-header-bar.cxx
new file mode 100644
index 0000000000..6019050236
--- /dev/null
+++ b/libreofficekit/qa/gtktiledviewer/gtv-calc-header-bar.cxx
@@ -0,0 +1,236 @@
+/* -*- 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 <vector>
+
+#include "gtv-calc-header-bar.hxx"
+
+#include <boost/property_tree/ptree.hpp>
+#include <o3tl/unreachable.hxx>
+#include <utility>
+
+namespace {
+
+struct GtvCalcHeaderBarPrivateImpl
+{
+    /// Stores size and content of a single row header.
+    struct Header
+    {
+        int m_nSize;
+        std::string m_aText;
+        Header(int nSize, std::string aText)
+            : m_nSize(nSize),
+              m_aText(std::move(aText))
+            { }
+    };
+
+    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: */