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//===========================================
// Lumina-DE source code
// Copyright (c) 2015, Ken Moore
// Available under the 3-clause BSD license
// See the LICENSE file for full details
//===========================================
#ifndef _LUMINA_DESKTOP_LDESKTOP_PLUGIN_SPACE_H
#define _LUMINA_DESKTOP_LDESKTOP_PLUGIN_SPACE_H
#include <QListWidget>
#include <QDropEvent>
#include <QDrag> //includes all the QDrag*Event classes
#include <QUrl>
#include <QMimeData>
#include <QSettings>
#include <QDebug>
#include <QFile>
#include <QDir>
#include "desktop-plugins/LDPlugin.h"
#define MIMETYPE QString("x-special/lumina-desktop-plugin")
//#define MIMEPOS QString("x-special/lumina-desktop-plugin-pos")
#define GRIDSIZE 16.0 //Need this to be a double/float - usually used for divisions
class LDesktopPluginSpace : public QWidget{
Q_OBJECT
signals:
void PluginRemovedByUser(QString ID);
public:
LDesktopPluginSpace(QWidget *parent = 0);
~LDesktopPluginSpace();
void LoadItems(QStringList plugs, QStringList files);
//void setShowGrid(bool show); This is already implemented in QTableView (inherited)
void SetIconSize(int size);
void ArrangeTopToBottom(bool ttb); //if false, will arrange left->right
void cleanup();
public slots:
void UpdateGeom();
private:
QSettings *plugsettings;
QSize itemSize;
QStringList plugins, deskitems;
QList<LDPlugin*> ITEMS;
bool TopToBottom;
int RoundUp(double num){
int out = num; //This will truncate the number
if(out < num){ out++; } //need to increase by 1
return out;
}
QSize calculateItemSize(int icosize);
void addDesktopItem(QString filepath); //This will convert it into a valid Plugin ID
void addDesktopPlugin(QString plugID);
QPoint findOpenSpot(int gridwidth = 1, int gridheight = 1, int startRow = 0, int startCol = 0);
QPoint posToGrid(QPoint pos){
//This assumes a point in widget-relative coordinates
pos.setX( RoundUp(pos.x()/GRIDSIZE));
pos.setY( RoundUp(pos.y()/GRIDSIZE));
return pos;
}
QRect geomToGrid(QRect geom){
return QRect( RoundUp(geom.x()/GRIDSIZE), RoundUp(geom.y()/GRIDSIZE), \
RoundUp(geom.width()/GRIDSIZE), RoundUp(geom.height()/GRIDSIZE) );
}
QRect gridToGeom(QRect grid){
//This function incorporates the bottom/right edge matchins procedures (for incomplete last grid)
QRect geom(grid.x()*GRIDSIZE, grid.y()*GRIDSIZE, grid.width()*GRIDSIZE, grid.height()*GRIDSIZE);
//Now check the edge conditions (last right/bottom grid points might be smaller than GRIDSIZE)
//qDebug() << "GridToGeom:" << grid << geom;
if(geom.right() > this->geometry().right() && (geom.right() -this->geometry().right())<GRIDSIZE ){
geom.setRight(this->geometry().right()); //match up with the edge
}
if(geom.bottom() > this->geometry().bottom() && (geom.bottom() -this->geometry().bottom())<GRIDSIZE ){
geom.setBottom(this->geometry().bottom()); //match up with the edge
}
//qDebug() << " - Adjusted:" << geom;
return geom;
}
//Internal simplification for setting up a drag event
void setupDrag(QString id, QString type){
QMimeData *mime = new QMimeData;
mime->setData(MIMETYPE, QString(type+"::::"+id).toLocal8Bit() );
//If this is a desktop file - also add it to the generic URI list mimetype
if(id.startsWith("applauncher::")){
QList<QUrl> urilist;
urilist << QUrl::fromLocalFile( id.section("---",0,0).section("::",1,50) );
mime->setUrls(urilist);
}
//Create the drag structure
QDrag *drag = new QDrag(this);
drag->setMimeData(mime);
drag->exec(Qt::CopyAction);
}
bool ValidGeometry(QString id, QRect geom){
//First check that it is within the desktop area completely
// Note that "this->geometry()" is not in the same coordinate space as the geometry inputs
if(!QRect(0,0,this->width(), this->height()).contains(geom)){ return false; }
//Now check that it does not collide with any other items
for(int i=0; i<ITEMS.length(); i++){
if(ITEMS[i]->whatsThis()==id){ continue; }
else if(geom.intersects(ITEMS[i]->geometry())){ return false; }
}
return true;
}
LDPlugin* ItemFromID(QString ID){
for(int i=0; i<ITEMS.length(); i++){
if(ITEMS[i]->whatsThis()==ID){ return ITEMS[i]; }
}
return 0;
}
private slots:
void reloadPlugins();
void StartItemMove(QString ID){
setupDrag(ID, "move");
}
void StartItemResize(QString ID){
setupDrag(ID, "resize");
}
void RemoveItem(QString ID){
for(int i=0; i<ITEMS.length(); i++){
if(ITEMS[i]->whatsThis()==ID){
ITEMS[i]->Cleanup();
delete ITEMS.takeAt(i);
emit PluginRemovedByUser(ID);
return;
}
}
}
protected:
//Need Drag and Drop functionality (internal movement)
void dragEnterEvent(QDragEnterEvent *ev){
if(ev->mimeData()->hasFormat(MIMETYPE) ){
ev->acceptProposedAction(); //allow this to be dropped here
}else if(ev->mimeData()->hasUrls()){
ev->acceptProposedAction(); //allow this to be dropped here
}else{
ev->ignore();
}
}
void dragMoveEvent(QDragMoveEvent *ev){
if(ev->mimeData()->hasFormat(MIMETYPE) ){
//Internal move/resize - Check for validity
QString act = QString( ev->mimeData()->data(MIMETYPE) );
LDPlugin *item = ItemFromID(act.section("::::",1,50));
//qDebug() << "Internal Move Event:" << act << ev->pos();
if(item!=0){
QRect geom = item->geometry();
QPoint grid = posToGrid(ev->pos());
if(act.section("::::",0,0)=="move"){
QPoint diff = grid - posToGrid(geom.center()); //difference in grid coords
//qDebug() << "Move Event:" << "Diff:" << diff << "Geom:" << geom << grid << ev->pos();
geom = geomToGrid(geom); //convert to grid coords
geom.moveTo( (geom.topLeft()+diff) );
geom = gridToGeom(geom); //convert back to px coords with edge matching
//qDebug() << " - Setting Geometry:" << geom;
if(ValidGeometry(act.section("::::",1,50), geom)){
item->setGeometry(geom);
ev->acceptProposedAction();
item->savePluginGeometry(geomToGrid(geom));
}else{ ev->ignore(); } //invalid location
}else{
//Resize operation
QPoint diff = grid - posToGrid(geom.center());; //need difference from center (grid)
geom = geomToGrid(geom); //convert to grid coordinates now
if(diff.x()==0 && diff.y()==0){
ev->acceptProposedAction(); //nothing to do - but keep the drag active
}else{
if(diff.x()<0){ geom.setLeft( grid.x()); } //expanding to the left
else if(diff.x()>0){ geom.setRight( grid.x()); } //expanding to the right
if(diff.y()<0){ geom.setTop( grid.y()); } //expanding above
else if(diff.y()>0){ geom.setBottom( grid.y()); } //expanding below
//Now convert back to pixel coords (includes edge matching/adjustments)
geom = gridToGeom(geom);
//Check Validity of new geom
if(ValidGeometry(act.section("::::",1,50), geom)){
item->setGeometry(geom);
ev->acceptProposedAction();
item->savePluginGeometry(geomToGrid(geom));
}else{ ev->ignore(); } //invalid location
}
}
}
}else if(ev->mimeData()->hasUrls()){
ev->acceptProposedAction(); //allow this to be dropped here
}else{
ev->ignore();
}
}
void dropEvent(QDropEvent *ev){
//QPoint grid = posToGrid(ev->pos());
if(ev->mimeData()->hasFormat(MIMETYPE)){
//Desktop Items getting moved around - already performed in the dragMoveEvent
ev->accept();
}else if(ev->mimeData()->hasUrls()){
ev->accept();
//Files getting dropped here
QList<QUrl> urls = ev->mimeData()->urls();
qDebug() << "Desktop Drop Event:" << urls;
for(int i=0; i<urls.length(); i++){
//If this file is not in the desktop folder, move/copy it here
if(urls[i].isLocalFile()){
QFileInfo info(urls[i].toLocalFile());
if(info.exists() && !QFile::exists(QDir::homePath()+"/Desktop/"+info.fileName())){
//Make a link to the file here
QFile::link(info.absoluteFilePath(), QDir::homePath()+"/Desktop/"+info.fileName());
}else{
qWarning() << "Invalid desktop file drop (ignored):" << urls[i].toString();
}
}
}
}else{
//Ignore this event
ev->ignore();
}
}
};
#endif
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