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[REBOL] Re: calm before the storm

From: moliad:gmai:l at: 11-Jun-2008 14:50

hi Pekr, right now, picture-lab only has its first picture editor type. its a text-area in which we write an effects block. Other editors are planned, (a graphic element stacker (like illustrator), a simple paint, and a graphical node-based editor). Although the text-area editor sounds simple, and un-artistic, the actual handling of that text is quite advanced, I deep bind the code to external values, which are properties, so you can use external words in your effects. if you size related values, like in this simple example: gradient 0x1 red black draw [ pen yellow line-width 3 box 10x10 (size - 10x10) line 10x10 (size - 10x10) ] anytime you change the size in the properties gui, the draw adapts, the history is populated and a new render is done, so the box and diagonal line are always pinned to the corners of the image. ALL programming errors are gracefully handled. Indeed the text-area bg even changes color in real-time as you type to hint to you what's wrong (unloadable, unbindable, uncomposable, unrenderable) The text-area in which we edit the effect block uses GLayout's editing patch and actually calls the whole rendering procedure in real-time, adding to the undo history only on valid effects blocks (it knows when the render was successfull). so you can type your stuff and every time a valid effect occurs, as you type, the output refreshes. so right now, picture-lab is the most advanced draw block editor I know of. its actually quite fun to type in your effects and draws and see them pop-in as you type. Its a hell of a lot easier to do graphics for rebol apps now. I'll post screen shots when I have at least a pretty picture in the output and the properties pages has a bit more "meat" in it. shouldn't be too long. btw, when R3 is a little closer to release (and picture lab is liquified), I will be porting picture-lab to it. this will be pretty easy, using liquid, as all of the actual code is abstracted through the dataflow kernel. If I update the kernel to R3, the same high-level code should work in both R2 and R3, on completely different graphic and i/o sub-systems. -MAx On Wed, Jun 11, 2008 at 5:35 AM, Petr Krenzelok <> wrote: