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Added QgsFileDropEdit class which extends QLineEdit to accept files d…
…ropped on the edit field. git-svn-id: http://svn.osgeo.org/qgis/trunk@6513 c8812cc2-4d05-0410-92ff-de0c093fc19c
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Feb 4, 2007
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,159 @@ | ||
| /*************************************************************************** | ||
| qgsfiledropedit.cpp - File Dropable LineEdit | ||
| -------------------------------------- | ||
| Date : 31-Jan-2007 | ||
| Copyright : (C) 2007 by Tom Elwertowski | ||
| Email : telwertowski at users dot sourceforge dot net | ||
| *************************************************************************** | ||
| * * | ||
| * 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 * | ||
| * (at your option) any later version. * | ||
| * * | ||
| ***************************************************************************/ | ||
| /* $Id$ */ | ||
|
|
||
| #include "qgsfiledropedit.h" | ||
| #include <QDropEvent> | ||
| #include <QFileInfo> | ||
| #include <QPainter> | ||
| #include <QUrl> | ||
|
|
||
| /*! | ||
| \class QgsFileDropEdit | ||
| \brief The QgsDropNameEdit class provides a line edit widget which | ||
| accepts file drops. | ||
| Dropping can be limited to files only, files with a specific extension | ||
| or directories only. By default, dropping is limited to files only. | ||
| */ | ||
|
|
||
| QgsFileDropEdit::QgsFileDropEdit(QWidget *parent) | ||
| : QLineEdit(parent) | ||
| { | ||
| mDirOnly = false; | ||
| mFileOnly = true; | ||
| mDragActive = false; | ||
| setAcceptDrops(true); | ||
| } | ||
|
|
||
| QgsFileDropEdit::~QgsFileDropEdit() | ||
| {} | ||
|
|
||
| /*! | ||
| Limit drops to directories. | ||
| */ | ||
| void QgsFileDropEdit::setDirOnly(bool dirOnly) | ||
| { | ||
| mDirOnly = dirOnly; | ||
| if (mDirOnly) | ||
| { | ||
| mFileOnly = false; | ||
| } | ||
| } | ||
|
|
||
| /*! | ||
| Limit drops to files. | ||
| */ | ||
| void QgsFileDropEdit::setFileOnly(bool fileOnly) | ||
| { | ||
| mFileOnly = fileOnly; | ||
| if (mFileOnly) | ||
| { | ||
| mDirOnly = false; | ||
| } | ||
| } | ||
|
|
||
| /*! | ||
| Limit drops to files with specified extension. | ||
| */ | ||
| void QgsFileDropEdit::setSuffixFilter(const QString& suffix) | ||
| { | ||
| mSuffix = suffix; | ||
| } | ||
|
|
||
| /*! | ||
| Return file name if object meets drop criteria. | ||
| */ | ||
| QString QgsFileDropEdit::acceptableFilePath(QDropEvent *event) const | ||
| { | ||
| QString path; | ||
| if (event->mimeData()->hasUrls()) | ||
| { | ||
| QFileInfo file(event->mimeData()->urls().first().toLocalFile()); | ||
| if ( !( mFileOnly && !file.isFile() || | ||
| mDirOnly && !file.isDir() || | ||
| !mSuffix.isEmpty() && mSuffix.compare(file.suffix(), Qt::CaseInsensitive) ) ) | ||
| path = file.filePath(); | ||
| } | ||
| return path; | ||
| } | ||
|
|
||
| /*! | ||
| Check if dragged object is acceptible. Called when a drag is in progress | ||
| and the mouse enters this widget. | ||
| */ | ||
| void QgsFileDropEdit::dragEnterEvent(QDragEnterEvent *event) | ||
| { | ||
| QString filePath = acceptableFilePath(event); | ||
| if (!filePath.isEmpty()) | ||
| { | ||
| event->acceptProposedAction(); | ||
| mDragActive = true; | ||
| update(); | ||
| } | ||
| else | ||
| { | ||
| QLineEdit::dragEnterEvent(event); | ||
| } | ||
| } | ||
|
|
||
| /*! | ||
| Called when a drag is in progress and the mouse leaves this widget. | ||
| */ | ||
| void QgsFileDropEdit::dragLeaveEvent(QDragLeaveEvent *event) | ||
| { | ||
| QLineEdit::dragLeaveEvent(event); | ||
| event->accept(); | ||
| mDragActive = false; | ||
| update(); | ||
| } | ||
|
|
||
| /*! | ||
| Receive the dragged object. Called when the drag is dropped on this widget. | ||
| */ | ||
| void QgsFileDropEdit::dropEvent(QDropEvent *event) | ||
| { | ||
| QString filePath = acceptableFilePath(event); | ||
| if (!filePath.isEmpty()) | ||
| { | ||
| setText(filePath); | ||
| selectAll(); | ||
| setFocus(Qt::MouseFocusReason); | ||
| event->acceptProposedAction(); | ||
| mDragActive = false; | ||
| update(); | ||
| } | ||
| else | ||
| { | ||
| QLineEdit::dropEvent(event); | ||
| } | ||
| } | ||
|
|
||
| /*! | ||
| Paints line edit with drag highlight in response to a paint event. | ||
| */ | ||
| void QgsFileDropEdit::paintEvent(QPaintEvent *e) | ||
| { | ||
| QLineEdit::paintEvent(e); | ||
| if (mDragActive) | ||
| { | ||
| QPainter p(this); | ||
| int width = 2; // width of highlight rectangle inside frame | ||
| p.setPen(QPen(palette().highlight(), width)); | ||
| QRect r = rect().adjusted(width, width, -width, -width); | ||
| p.drawRect(r); | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,52 @@ | ||
| /*************************************************************************** | ||
| qgsfiledropedit.h - File Dropable LineEdit | ||
| -------------------------------------- | ||
| Date : 31-Jan-2007 | ||
| Copyright : (C) 2007 by Tom Elwertowski | ||
| Email : telwertowski at users dot sourceforge dot net | ||
| *************************************************************************** | ||
| * * | ||
| * 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 * | ||
| * (at your option) any later version. * | ||
| * * | ||
| ***************************************************************************/ | ||
| /* $Id$ */ | ||
| #ifndef QGSFILEDROPEDIT_H | ||
| #define QGSFILEDROPEDIT_H | ||
|
|
||
| #include <QLineEdit> | ||
|
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| class GUI_EXPORT QgsFileDropEdit: public QLineEdit | ||
| { | ||
| public: | ||
| QgsFileDropEdit(QWidget *parent = 0); | ||
| virtual ~QgsFileDropEdit(); | ||
|
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| bool dirOnly() const { return mDirOnly; } | ||
| void setDirOnly(bool dirOnly); | ||
|
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| bool fileOnly() const { return mFileOnly; } | ||
| void setFileOnly(bool fileOnly); | ||
|
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| const QString& suffixFilter() const { return mSuffix; } | ||
| void setSuffixFilter( const QString& suffix); | ||
|
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| protected: | ||
|
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| virtual void dragEnterEvent(QDragEnterEvent *event); | ||
| virtual void dragLeaveEvent(QDragLeaveEvent *event); | ||
| virtual void dropEvent(QDropEvent *event); | ||
| virtual void paintEvent(QPaintEvent *e); | ||
|
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| private: | ||
| QString acceptableFilePath(QDropEvent *event) const; | ||
|
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| QString mSuffix; | ||
| bool mDirOnly; | ||
| bool mFileOnly; | ||
| bool mDragActive; | ||
| }; | ||
|
|
||
| #endif |
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