Added a new Popup class, which overall is functionally similar to the

Window class, but stripped down to the bare essential functionality to
just draw and position them. This means no resizing, no close buttons,
no ability to move them, etc. This should help reduce the overhead in
drawing speech bubbles, as well as other popup type dialogs, but is also
not a drop in replacement for the Window class as well.

Signed-off-by: Ira Rice <irarice@gmail.com>

1 files changed, 211 insertions, 0 deletions

diff --git a/src/gui/popup.cpp b/src/gui/popup.cpp
new file mode 100644
index 00000000..906f7a2e
--- /dev/null
+++ b/src/gui/popup.cpp
@@ -0,0 +1,211 @@
+/*
+ *  Aethyra
+ *  Copyright (C) 2009  Aethyra Development Team
+ *
+ *  This file is part of Aethyra based on original code
+ *  from The Mana World.
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  any later version.
+ *
+ *  This program 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 General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#include <algorithm>
+#include <cassert>
+#include <climits>
+
+#include <guichan/exception.hpp>
+
+#include "gui.h"
+#include "skin.h"
+#include "popup.h"
+#include "window.h"
+#include "windowcontainer.h"
+
+#include "../configlistener.h"
+#include "../configuration.h"
+#include "../log.h"
+
+#include "../resources/image.h"
+
+ConfigListener *Popup::popupConfigListener = 0;
+int Popup::instances = 0;
+bool Popup::mAlphaChanged = false;
+
+class PopupConfigListener : public ConfigListener
+{
+    void optionChanged(const std::string &)
+    {
+        Popup::mAlphaChanged = true;
+    }
+};
+
+Popup::Popup(const std::string& name, Window *parent,
+             const std::string& skin):
+    mParent(parent),
+    mPopupName(name),
+    mMinWidth(100),
+    mMinHeight(40),
+    mMaxWidth(INT_MAX),
+    mMaxHeight(INT_MAX)
+{
+    logger->log("Popup::Popup(\"%s\")", name.c_str());
+
+    if (!windowContainer)
+        throw GCN_EXCEPTION("Popup::Popup(): no windowContainer set");
+
+    if (instances == 0)
+    {
+        popupConfigListener = new PopupConfigListener();
+        // Send GUI alpha changed for initialization
+        popupConfigListener->optionChanged("guialpha");
+        config.addListener("guialpha", popupConfigListener);
+    }
+
+    setPadding(3);
+
+    instances++;
+
+    // Loads the skin
+    mSkin = skinLoader->load(skin);
+
+    setGuiAlpha();
+
+    // Add this window to the window container
+    windowContainer->add(this);
+
+    // Popups are invisible by default
+    setVisible(false);
+
+    addWidgetListener(this);
+}
+
+Popup::~Popup()
+{
+    logger->log("Popup::~Popup(\"%s\")", mPopupName.c_str());
+
+    while (!mWidgets.empty())
+    {
+        gcn::Widget *w = mWidgets.front();
+        remove(w);
+        delete(w);
+    }
+
+    instances--;
+
+    mSkin->instances--;
+
+    if (instances == 0)
+    {
+        config.removeListener("guialpha", popupConfigListener);
+        delete popupConfigListener;
+        popupConfigListener = NULL;
+    }
+}
+
+void Popup::setWindowContainer(WindowContainer *wc)
+{
+    windowContainer = wc;
+}
+
+void Popup::draw(gcn::Graphics *graphics)
+{
+    if (!isVisible())
+        return;
+
+    Graphics *g = static_cast<Graphics*>(graphics);
+
+    g->drawImageRect(0, 0, getWidth(), getHeight(), mSkin->border);
+
+    // Update Popup alpha values
+    if (mAlphaChanged)
+    {
+        for_each(mSkin->border.grid, mSkin->border.grid + 9,
+                 std::bind2nd(std::mem_fun(&Image::setAlpha),
+                 config.getValue("guialpha", 0.8)));
+    }
+    drawChildren(graphics);
+}
+
+gcn::Rectangle Popup::getChildrenArea()
+{
+    return gcn::Rectangle(getPadding(), 0, getWidth() - getPadding() * 2,
+                          getHeight() - getPadding() * 2);
+}
+
+void Popup::setContentSize(int width, int height)
+{
+    width += 2 * getPadding();
+    height += 2 * getPadding();
+
+    if (getMinWidth() > width)
+        width = getMinWidth();
+    else if (getMaxWidth() < width)
+        width = getMaxWidth();
+    if (getMinHeight() > height)
+        height = getMinHeight();
+    else if (getMaxHeight() < height)
+        height = getMaxHeight();
+
+    setSize(width, height);
+}
+
+void Popup::setLocationRelativeTo(gcn::Widget *widget)
+{
+    int wx, wy;
+    int x, y;
+
+    widget->getAbsolutePosition(wx, wy);
+    getAbsolutePosition(x, y);
+
+    setPosition(getX() + (wx + (widget->getWidth() - getWidth()) / 2 - x),
+                getY() + (wy + (widget->getHeight() - getHeight()) / 2 - y));
+}
+
+void Popup::setMinWidth(unsigned int width)
+{
+    mMinWidth = width;
+}
+
+void Popup::setMinHeight(unsigned int height)
+{
+    mMinHeight = height;
+}
+
+void Popup::setMaxWidth(unsigned int width)
+{
+    mMaxWidth = width;
+}
+
+void Popup::setMaxHeight(unsigned int height)
+{
+    mMaxHeight = height;
+}
+
+void Popup::scheduleDelete()
+{
+    windowContainer->scheduleDelete(this);
+}
+
+void Popup::setGuiAlpha()
+{
+    //logger->log("Popup::setGuiAlpha: Alpha Value %f", config.getValue("guialpha", 0.8));
+    for (int i = 0; i < 9; i++)
+    {
+        //logger->log("Popup::setGuiAlpha: Border Image (%i)", i);
+        mSkin->border.grid[i]->setAlpha(config.getValue("guialpha", 0.8));
+    }
+
+    mAlphaChanged = false;
+}
+