510cada94b
Subject: [E-devel] [Edje]: Bug Fix: Edje draggable jumps when external events is used. Please find attached bug fix patch for edje draggable jump issue when external event area is used. Bug: When an external event area is used for edje draggable and when after mouse move if immediate mouse down is done then the draggable jumps back to its original position. Analysis: In _edje_mouse_down_signal_cb When an external event area is set i.e., when rp->events_to is set. tmp.x value is set to 0, need_reset is set to 1 and also _edje_recalc_do is called including emitting "drag" signal. this code is unnecessary/buggy and instead it causes the jump. 1. In mouse down only drag->down.x and drag->down.y needs to be set which is being set below and tmp value need not be reset to 0 as tmp value is calculated in mouse move based on drag->down.x and drag->down.y values. 2. need_reset is already set in mouse up hence need not be set in mouse down again. 3. edje_recalc_do is the function which actually causes the movement of draggable based on tmp value hence need not be called in mouse down. because of the above code race condition happens and as tmp value is being set to 0 and need reset is also enabled the draggable jumps back to where it started. 4. "drag": is sent even before "drag,start" [ should not /need not be sent in mouse down ] All the above code is added only when external event area is set and the above code is not even related to whether external event is set or not. Solution: When an external event area is set directly equating rp = rp->events_to and sending mouse,down would be enough, as down.x and down.y is set below including sending drag,start. Recalc_do should be called only in mouse move as its responsible for movement including setting tmp value. need_reset is already set in mouse up. drag should not be sent from mouse down. Change Description: Bug Fix: Edje Draggable jumps when mouse down is done immediately after mouse move when an external event area is used. demo edc pasted below to reproduce the issue. Please find attached bug fix patch for edje draggable jump issue when external event area is used. Bug: When an external event area is used for edje draggable and when after mouse move if immediate mouse down is done then the draggable jumps back to its original position. Analysis: In _edje_mouse_down_signal_cb When an external event area is set i.e., when rp->events_to is set. tmp.x value is set to 0, need_reset is set to 1 and also _edje_recalc_do is called including emitting "drag" signal. this code is unnecessary/buggy and instead it causes the jump. 1. In mouse down only drag->down.x and drag->down.y needs to be set which is being set below and tmp value need not be reset to 0 as tmp value is calculated in mouse move based on drag->down.x and drag->down.y values. 2. need_reset is already set in mouse up hence need not be set in mouse down again. 3. edje_recalc_do is the function which actually causes the movement of draggable based on tmp value hence need not be called in mouse down. because of the above code race condition happens and as tmp value is being set to 0 and need reset is also enabled the draggable jumps back to where it started. 4. "drag": is sent even before "drag,start" [ should not /need not be sent in mouse down ] All the above code is added only when external event area is set and the above code is not even related to whether external event is set or not. Solution: When an external event area is set directly equating rp = rp->events_to and sending mouse,down would be enough, as down.x and down.y is set below including sending drag,start. Recalc_do should be called only in mouse move as its responsible for movement including setting tmp value. need_reset is already set in mouse up. drag should not be sent from mouse down. Change Description: Bug Fix: Edje Draggable jumps when mouse down is done immediately after mouse move when an external event area is used. demo edc pasted below to reproduce the issue. Please find attached bug fix patch for edje draggable jump issue when external event area is used. Bug: When an external event area is used for edje draggable and when after mouse move if immediate mouse down is done then the draggable jumps back to its original position. Analysis: In _edje_mouse_down_signal_cb When an external event area is set i.e., when rp->events_to is set. tmp.x value is set to 0, need_reset is set to 1 and also _edje_recalc_do is called including emitting "drag" signal. this code is unnecessary/buggy and instead it causes the jump. 1. In mouse down only drag->down.x and drag->down.y needs to be set which is being set below and tmp value need not be reset to 0 as tmp value is calculated in mouse move based on drag->down.x and drag->down.y values. 2. need_reset is already set in mouse up hence need not be set in mouse down again. 3. edje_recalc_do is the function which actually causes the movement of draggable based on tmp value hence need not be called in mouse down. because of the above code race condition happens and as tmp value is being set to 0 and need reset is also enabled the draggable jumps back to where it started. 4. "drag": is sent even before "drag,start" [ should not /need not be sent in mouse down ] All the above code is added only when external event area is set and the above code is not even related to whether external event is set or not. Solution: When an external event area is set directly equating rp = rp->events_to and sending mouse,down would be enough, as down.x and down.y is set below including sending drag,start. Recalc_do should be called only in mouse move as its responsible for movement including setting tmp value. need_reset is already set in mouse up. drag should not be sent from mouse down. Change Description: Bug Fix: Edje Draggable jumps when mouse down is done immediately after mouse move when an external event area is used. demo edc pasted below to reproduce the issue. Please find attached bug fix patch for edje draggable jump issue when external event area is used. Bug: When an external event area is used for edje draggable and when after mouse move if immediate mouse down is done then the draggable jumps back to its original position. Analysis: In _edje_mouse_down_signal_cb When an external event area is set i.e., when rp->events_to is set. tmp.x value is set to 0, need_reset is set to 1 and also _edje_recalc_do is called including emitting "drag" signal. this code is unnecessary/buggy and instead it causes the jump. 1. In mouse down only drag->down.x and drag->down.y needs to be set which is being set below and tmp value need not be reset to 0 as tmp value is calculated in mouse move based on drag->down.x and drag->down.y values. 2. need_reset is already set in mouse up hence need not be set in mouse down again. 3. edje_recalc_do is the function which actually causes the movement of draggable based on tmp value hence need not be called in mouse down. because of the above code race condition happens and as tmp value is being set to 0 and need reset is also enabled the draggable jumps back to where it started. 4. "drag": is sent even before "drag,start" [ should not /need not be sent in mouse down ] All the above code is added only when external event area is set and the above code is not even related to whether external event is set or not. Solution: When an external event area is set directly equating rp = rp->events_to and sending mouse,down would be enough, as down.x and down.y is set below including sending drag,start. Recalc_do should be called only in mouse move as its responsible for movement including setting tmp value. need_reset is already set in mouse up. drag should not be sent from mouse down. Change Description: Bug Fix: Edje Draggable jumps when mouse down is done immediately after mouse move when an external event area is used. SVN revision: 71277 |
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README
Edje 1.2.0 ****************************************************************************** FOR ANY ISSUES PLEASE EMAIL: enlightenment-devel@lists.sourceforge.net ****************************************************************************** Requirements: ------------- Must: libc eet (at least 1.5.0) ecore (at least 1.1.0) ecore-evas (at least 1.1.0) ecore-file (at least 1.1.0) embryo (at least 1.1.0) evas (at least 1.1.0) For audio support (disabled - you have to patch to enable): remix - https://github.com/kfish/remix libsndfile (at least 1.0.22) libvorbis libogg libflac libasound (alsa) Edje is a graphical layout and animation library for animated resizable, compressed and scalable themes. It is meant to abstract UI from the programmer to make it possible to plug in any replacement look at feel that can be generated any time after an application or library has already been developed, thus allowing full flexibility of look and feel without having to involve the software developers. ------------------------------------------------------------------------------ COMPILING AND INSTALLING: ./configure make (as root unless you are installing in your users directories): make install