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Canvas widgets: Difference between revisions
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→Missing / Todo
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* '''[[Canvas Widgets#Picking & Widget_Callbacks|Picking]]''': For mouse handling some kind of picking would be nice. As already mentioned, at least bounding box intersections will be needed.Forward mouse events to canvas elements (trigger onhover, onclick, etc.) The canvas could listen for creation of the signal properties and then add the according region to a list of monitored regions. If the cursor is in one of the regions the property is signaled. {{Progressbar|40}} | * '''[[Canvas Widgets#Picking & Widget_Callbacks|Picking]]''': For mouse handling some kind of picking would be nice. As already mentioned, at least bounding box intersections will be needed.Forward mouse events to canvas elements (trigger onhover, onclick, etc.) The canvas could listen for creation of the signal properties and then add the according region to a list of monitored regions. If the cursor is in one of the regions the property is signaled. {{Progressbar|40}} | ||
* '''[[#Keyboard Handling|Keyboard input]]''': I haven't thought too much about it and also haven't done anything, but we will definitely need access to keyboard events {{Not done}} | * '''[[#Keyboard Handling|Keyboard input]]''': I haven't thought too much about it and also haven't done anything, but we will definitely need access to keyboard events {{Not done}} | ||
* '''[[Canvas_Widgets#Nasal_requirements|Implementing Widgets]]''': {{Not done}} | |||
* '''[[Canvas_Widgets#Dialog_Parser|Reimplementing the dialog/xml parser]]''': {{Not done}} | |||
* '''[http://wiki.flightgear.org/Canvas_Widgets#Layout_Management_.28_.28Not_done.29.29 Layout Handling]''': {{Not done}} | * '''[http://wiki.flightgear.org/Canvas_Widgets#Layout_Management_.28_.28Not_done.29.29 Layout Handling]''': {{Not done}} | ||
* '''Clipping''': For different reasons we will need to be able to clip some elements to certain regions. It should work with specifying either a clipping rectangle or by using a path. OpenVG seems to have support for it, although I haven't looked into it too deep. We also need to ensure that it also works with text. At least rectangular regions are needed.(eg. group/clip-min[0..1], group/clip-max[0..1]) {{Not done}} | * '''Clipping''': For different reasons we will need to be able to clip some elements to certain regions. It should work with specifying either a clipping rectangle or by using a path. OpenVG seems to have support for it, although I haven't looked into it too deep. We also need to ensure that it also works with text. At least rectangular regions are needed.(eg. group/clip-min[0..1], group/clip-max[0..1]) {{Not done}} | ||
* '''[[Canvas Maps|Geographic Mapping]]''': It's very experimental, missing different projection modes (eg. vertical projection) and especially the Nasal API feels very hackish. {{Progressbar|50}} | * '''[[Canvas Maps|Geographic Mapping]]''': It's very experimental, missing different projection modes (eg. vertical projection) and especially the Nasal API feels very hackish. {{Progressbar|50}} | ||
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** '''Hooray''': "On the other hand, one could just as well use your canvas "groups" to support alternating/flashing contents using a new flag - sort of like a GIF image with delays between each image element." | ** '''Hooray''': "On the other hand, one could just as well use your canvas "groups" to support alternating/flashing contents using a new flag - sort of like a GIF image with delays between each image element." | ||
* '''Improve the Nasal API''': Add some helper functions for animating different glass cockpit displays (I have already some basic code, but it needs some generalization). | * '''Improve the Nasal API''': Add some helper functions for animating different glass cockpit displays (I have already some basic code, but it needs some generalization). | ||
** Check what is missing to implement the different hardcoded instruments.{{Not done}} | ** Check what is missing to implement the different hardcoded instruments.{{Not done}} | ||
** provide Nasal hooks to access: taxiways, <del><parking positions</del> etc | |||
** Maybe support displaying shapefiles.{{Not done}} | ** Maybe support displaying shapefiles.{{Not done}} | ||
* '''Unify the canvas creation a bit''': such that canvases can be moved seamlessly between the different placements (gui, model,hud, etc.). The normal model placement is great but the gui widget placement needs to be able to also use an already existing canvas.{{Not done}} | * '''Unify the canvas creation a bit''': such that canvases can be moved seamlessly between the different placements (gui, model,hud, etc.). The normal model placement is great but the gui widget placement needs to be able to also use an already existing canvas.{{Not done}} | ||