openDesktop.org :
Virtual Piano Keyboard (Qt Designer plugin)
This is only a component (a widget), not a full program. If you want a real program made with it, please see:
http://www.qt-apps.org/content/show.php/Virtual+MIDI+Piano+Keyboard?content=88233
10 years ago
2010-09-25 0.9 Velocity Tint
Translate note velocity into key pressed color tint
Custom note names
2009-09-23 0.8 Raw & Black Keys
Raw keyboard events support.
SVG graphics giving black keys a nice 3D effect.
2009-08-03 0.7 Note Names
New properties: showLabels, useFlats and transpose.
2008-10-05 0.6 Reasonable limits
minNote and maxNote properties to limit the note numbers.
selectedColor property renamed to keyPressedColor.
keyboardMap fixes, mouse handling enhanced.
2008-09-05 0.5 Hash smoke
Speed optimisation and fixes
2008-08-31 0.4 Fashion keys
New highlight color property
2008-07-20 0.3 New rotation property
The new property allows to change, while working in the designer, the
rotation of the keyboard to show it vertical, or with any angle.
2008/07/13 0.2 bugs fixed.
2008/07/12 0.1 first release.
10 years ago
2010-09-25 0.9 Velocity Tint
Translate note velocity into key pressed color tint
Custom note names
2009-09-23 0.8 Raw & Black Keys
Raw keyboard events support.
SVG graphics giving black keys a nice 3D effect.
2009-08-03 0.7 Note Names
New properties: showLabels, useFlats and transpose.
2008-10-05 0.6 Reasonable limits
minNote and maxNote properties to limit the note numbers.
selectedColor property renamed to keyPressedColor.
keyboardMap fixes, mouse handling enhanced.
2008-09-05 0.5 Hash smoke
Speed optimisation and fixes
2008-08-31 0.4 Fashion keys
New highlight color property
2008-07-20 0.3 New rotation property
The new property allows to change, while working in the designer, the
rotation of the keyboard to show it vertical, or with any angle.
2008/07/13 0.2 bugs fixed.
2008/07/12 0.1 first release.
plcl
8 years ago
If you are trying to compile the widget sources in Mac OSX with Qt 4.6, please add the following lines to both demo.pro and plugin.pro:
Quote:
macx {
LIBS += -framework Carbon
}
This is not needed with Qt 4.5 or older.
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am75
8 years ago
Though, i ran into a small problem when compiled under linux the first time (ubuntu 8.04).
Quote:
rawkeybdapp.o: In function `RawKeybdApp::x11EventFilter(_XEvent*)':
rawkeybdapp.cpp:(.text+0x152): undefined reference to `XCheckIfEvent'
adding
Quote:
unix {
LIBS += -lX11
}
to the end of the plugin.pro file fixed the problem for me. I was just wondering how it could have been working for others using X11 without explicitly linking against libX11...
anyways. I like it alot.
Thanks for your great work!
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plcl
8 years ago
Thanks, I'm glad you like it!
I'm using openSUSE here. The link command generated by qmake/make in my system looks like this:
Quote:g++ -Wl,-O1 -shared -o libvpianokeybd.so pianoscene.o pianokey.o pianokeybd.o plugin.o keylabel.o rawkeybdapp.o moc_pianoscene.o moc_pianokeybd.o moc_plugin.o qrc_pianokeybd.o -L/usr/lib -lQtScript -L/usr/lib -pthread -pthread -lQtSvg -L/usr/X11R6/lib -pthread -pthread -pthread -pthread -pthread -pthread -pthread -pthread -lQtXml -pthread -pthread -lQtGui -pthread -lpng -lfreetype -lSM -lICE -pthread -pthread -lXrender -lXrandr -lXfixes -lXcursor -lXinerama -lfontconfig -lXext -lX11 -lQtCore -lz -lm -pthread -lgthread-2.0 -lrt -lglib-2.0 -ldl -lQtDesigner -lpthread
As you can see, "-lX11" has been automatically added. I guess that Ubuntu's Qt4 or something in your environment is broken.
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van4dium
10 years ago
Is Possible to make vpiano vertical?
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plcl
10 years ago
Yes, it is easy. Use the rotate() method inherited from QGraphicsView. For instance, change the demo program in the VPiano class constructor, adding one line:
m_piano = new PianoKeybd(4, 3, this);
m_piano->rotate(270); // sets it vertical
You can use any transformation allowed by QGraphicsView like transform(), rotate(), scale(), shear(), and translate().
Regards,
Pedro
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