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/** PreviewPlugin.cc file for the fluxbox compositor. */
// Copyright (c) 2011 Gediminas Liktaras (gliktaras at gmail dot com)
//
// 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 "PreviewPlugin.hh"
#include "BaseScreen.hh"
#include "Exceptions.hh"
#include "Utility.hh"
#include "XRenderScreen.hh"
#include "XRenderWindow.hh"
#include <algorithm>
#include <iostream>
using namespace FbCompositor;
//--- CONSTANTS ----------------------------------------------------------------
/** Maximum height of the preview window. */
const int MAX_PREVIEW_HEIGHT = 150;
/** Maximum width of the preview window. */
const int MAX_PREVIEW_WIDTH = 150;
/** Transparency of the preview window. */
const unsigned int PREVIEW_ALPHA = 200;
/** Time in microseconds until the preview window is shown. */
const int SLEEP_TIME = 500000;
//--- CONSTRUCTORS AND DESTRUCTORS ---------------------------------------------
// Constructor.
PreviewPlugin::PreviewPlugin(const BaseScreen &screen, const std::vector<FbTk::FbString> &args) :
XRenderPlugin(screen, args) {
unsigned long mask_color = 0x01010101 * PREVIEW_ALPHA;
Pixmap mask_pixmap = createSolidPixmap(screen, MAX_PREVIEW_WIDTH, MAX_PREVIEW_HEIGHT, mask_color);
XRenderPictFormat *pict_format = XRenderFindStandardFormat(display(), PictStandardARGB32);
m_mask_picture.reset( new XRenderPicture(xrenderScreen(), pict_format, FilterFast));
m_mask_picture->setPixmap(mask_pixmap, true);
m_previous_damage.width = 0;
m_previous_damage.height = 0;
m_previous_window = None;
m_tick_tracker.setTickSize(SLEEP_TIME);
}
// Destructor.
PreviewPlugin::~PreviewPlugin() { }
//--- WINDOW EVENT CALLBACKS ---------------------------------------------------
// Called, whenever a new window is created.
void PreviewPlugin::windowCreated(const BaseCompWindow &window) {
const XRenderWindow &xr_window = dynamic_cast<const XRenderWindow&>(window);
XRenderPictFormat *pict_format = XRenderFindStandardFormat(display(), PictStandardARGB32);
XRenderPicturePtr thumbnail(new XRenderPicture(xrenderScreen(), pict_format, FilterBest));
Pixmap thumb_pixmap = createSolidPixmap(screen(), MAX_PREVIEW_WIDTH, MAX_PREVIEW_HEIGHT);
thumbnail->setPixmap(thumb_pixmap, true);
XRenderRenderingJob job = { PictOpOver, thumbnail, m_mask_picture, 0, 0, 0, 0, 0, 0, 0, 0 };
PreviewWindowData win_data = { xr_window, job };
m_preview_data.insert(std::make_pair(xr_window.window(), win_data));
}
/** Called, whenever a window is destroyed. */
void PreviewPlugin::windowDestroyed(const BaseCompWindow &window) {
std::map<Window, PreviewWindowData>::iterator it = m_preview_data.find(window.window());
if (it != m_preview_data.end()) {
m_preview_data.erase(it);
}
}
//--- RENDERING ACTIONS --------------------------------------------------------
/** Rectangles that the plugin wishes to damage. */
const std::vector<XRectangle> &PreviewPlugin::damagedAreas() {
m_damaged_areas.clear();
if ((m_previous_damage.width > 0) && (m_previous_damage.height > 0)) {
m_damaged_areas.push_back(m_previous_damage);
}
std::map<Window, PreviewWindowData>::iterator it = m_preview_data.find(screen().currentIconbarItem());
if (it != m_preview_data.end()) {
Window cur_window = it->first;
PreviewWindowData &cur_preview = it->second;
if ((m_previous_window != cur_window)
&& (cur_preview.window.contentPicture()->pictureHandle())
&& (cur_preview.window.maskPicture()->pictureHandle())) {
m_previous_window = cur_window;
updatePreviewWindowData(cur_preview);
}
updatePreviewWindowPos(cur_preview);
XRectangle cur_damage = { cur_preview.job.destination_x, cur_preview.job.destination_y,
cur_preview.job.width, cur_preview.job.height };
m_damaged_areas.push_back(cur_damage);
m_previous_damage = cur_damage;
if (!m_tick_tracker.isRunning()) {
m_tick_tracker.start();
}
} else {
m_previous_damage.width = 0;
m_previous_damage.height = 0;
m_previous_window = None;
m_tick_tracker.stop();
}
return m_damaged_areas;
}
/** Extra rendering actions and jobs. */
const std::vector<XRenderRenderingJob> &PreviewPlugin::extraRenderingActions() {
m_extra_jobs.clear();
std::map<Window, PreviewWindowData>::iterator it = m_preview_data.find(xrenderScreen().currentIconbarItem());
if (it != m_preview_data.end()) {
PreviewWindowData &cur_preview = it->second;
if ((cur_preview.job.source_picture->pictureHandle()) && (m_tick_tracker.totalElapsedTicks() > 0)) {
m_extra_jobs.push_back(cur_preview.job);
}
}
return m_extra_jobs;
}
//--- INTERNAL FUNCTIONS -------------------------------------------------------
// Update the preview window data.
void PreviewPlugin::updatePreviewWindowData(PreviewWindowData &win_preview) {
double scale_factor = 1.0;
scale_factor = std::max(scale_factor, win_preview.window.realWidth() / double(MAX_PREVIEW_WIDTH));
scale_factor = std::max(scale_factor, win_preview.window.realHeight() / double(MAX_PREVIEW_HEIGHT));
int thumbWidth = static_cast<int>(win_preview.window.realWidth() / scale_factor);
int thumbHeight = static_cast<int>(win_preview.window.realHeight() / scale_factor);
win_preview.window.contentPicture()->scalePicture(scale_factor, scale_factor);
win_preview.window.maskPicture()->scalePicture(scale_factor, scale_factor);
XRenderComposite(display(), PictOpSrc,
win_preview.window.contentPicture()->pictureHandle(),
win_preview.window.maskPicture()->pictureHandle(),
win_preview.job.source_picture->pictureHandle(),
0, 0, 0, 0, 0, 0, thumbWidth, thumbHeight);
win_preview.window.contentPicture()->resetPictureTransform();
win_preview.window.maskPicture()->resetPictureTransform();
win_preview.job.width = thumbWidth;
win_preview.job.height = thumbHeight;
}
// Update the preview window position.
// TODO: Place the preview window on the edge of the toolbar.
// TODO: Left/Right toolbar orientations.
void PreviewPlugin::updatePreviewWindowPos(PreviewWindowData &win_preview) {
int mouse_pos_x, mouse_pos_y;
mousePointerLocation(screen(), mouse_pos_x, mouse_pos_y);
if (screen().heads().size() > 0) {
XRectangle cur_head = screen().heads()[0];
for (size_t i = 1; i < screen().heads().size(); i++) {
XRectangle head = screen().heads()[i];
if ((mouse_pos_x >= head.x) && (mouse_pos_y >= head.y)
&& (mouse_pos_x < (head.x + head.width))
&& (mouse_pos_y < (head.y + head.height))) {
cur_head = head;
break;
}
}
win_preview.job.destination_x = mouse_pos_x - (win_preview.job.width / 2);
int mid_head = cur_head.y + (cur_head.height / 2);
if (mouse_pos_y < mid_head) {
win_preview.job.destination_y = mouse_pos_y + 10;
} else {
win_preview.job.destination_y = mouse_pos_y - win_preview.job.height - 10;
}
} else { // But what IF.
win_preview.job.destination_x = mouse_pos_x - (win_preview.job.width / 2);
win_preview.job.destination_y = mouse_pos_y + 10;
}
}
//--- PLUGIN MANAGER FUNCTIONS -------------------------------------------------
// Creates a plugin object.
extern "C" BasePlugin *createPlugin(const BaseScreen &screen, const std::vector<FbTk::FbString> &args) {
return new PreviewPlugin(screen, args);
}
// Returns the type of the plugin.
extern "C" FbCompositor::PluginType pluginType() {
return Plugin_XRender;
}
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