Package pyraf :: Module GkiMpl :: Class GkiMplKernel

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Class GkiMplKernel

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matplotlib graphics kernel implementation

Instance Methods

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makeGWidget(self, width=600, height=420)
Make the graphics widget.

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getAdjustedHeight(self)
Calculate an adjusted height to make the plot look better in the widget's viewfield - otherwise the graphics are too close to the top of the window.

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getTextPointSize(self, gkiTextScaleFactor, winWidth, winHeight)
Make a decision on the best font size (point) based on the size of the graphics window and other factors

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clearMplData(self)
Clear all lines, patches, text, etc.

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resizeGraphics(self, width, height)
It is time to set a magnitude to our currently normalized lines, and send them to the figure.

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gcur(self)
Return cursor value after key is typed

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gcurTerminate(self, msg='Window destroyed by user')
Terminate active gcur and set EOF flag source code

pre_imcur(self)
Override this so as to redraw if needed

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taskStart(self, name)
Because of redirection, this is not always called on the first plot but it should be called for every successive one.

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taskDone(self, name)
Called when a task is finished

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update(self)
Update for all Tk events.

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doubleRedrawHack(self)
This is a hack to prevent the double redraw on first plots.

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prepareToRedraw(self)
This is a hook for things that need to be done before the redraw from metacode.

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getHistory(self)
Additional information for page history

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setHistory(self, info)
Restore using additional information from page history

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startNewPage(self)
Setup for new page

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clearPage(self)
Clear buffer for new page

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isPageBlank(self)
Returns true if this page is blank

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activate(self)
Not really needed for Tkplot widgets (used to set OpenGL win)

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incrPlot(self)
Plot any new commands in the buffer

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_plotAppend(self, plot_function, *args)
Append a 2-tuple (plot_function, args) to the draw buffer

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gki_clearws(self, arg)

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gki_cancel(self, arg)

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gki_flush(self, arg, force=False)
Asked to render current plot immediately.

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gki_polyline(self, arg)
Instructed to draw a GKI polyline

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gki_polymarker(self, arg)
Instructed to draw a GKI polymarker.

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calculateMplTextAngle(self, charUp, textPath)
From the given GKI charUp and textPath values, calculate the rotation angle to be used for text.

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gki_text(self, arg)
Instructed to draw some GKI text

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gki_fillarea(self, arg)
Instructed to draw a GKI fillarea

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gki_putcellarray(self, arg)

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gki_setcursor(self, arg)

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gki_plset(self, arg)

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gki_pmset(self, arg)

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gki_txset(self, arg)

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gki_faset(self, arg)

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gki_getcursor(self, arg)

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gki_getcellarray(self, arg)

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gki_unknown(self, arg)

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gRedraw(self)

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redraw(self, o=None)
Redraw for expose or resize events, also called when page menu is used.

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Inherited from gkitkbase.GkiInteractiveTkBase: __init__, backPage, clear, control_clearws, control_closews, control_deactivatews, control_getwcs, control_openws, control_reactivatews, control_setwcs, createNewWindow, deleteAllPlots, deletePlot, doprint, editMenuInit, errorMessage, firstPage, flush, focusOnGwidget, forceFocus, getHelp, getWindowID, getWindowName, gki_setwcs, gwdestroy, hasFocus, iconify, lastPage, load, makeEditMenu, makeFileMenu, makeHelpMenu, makeMenuBar, makePageMenu, makeStatus, makeWindowMenu, nextPage, pageMenuInit, raiseWindow, save, saveCursorPos, setCursorColor, setDrawingColor, translate, windowMenuInit

Inherited from gkitkbase.GkiInteractiveTkBase (private): _setPageVar

Inherited from gki.GkiKernel: append, clearReturnData, control, createFunctionTables, getBuffer, getStderr, getStdin, getStdout, popStdio, preferTtyIpc, pushStdio, redoN, redrawOriginal, undoN

Class Variables

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Inherited from gkitkbase.GkiInteractiveTkBase: MAX_ERROR_COUNT

Inherited from gkitkbase.GkiInteractiveTkBase (private): _controlOps

Method Details

[hide private]

makeGWidget(self, width=600, height=420)

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Make the graphics widget. Also perform some self init.

getAdjustedHeight(self)

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Calculate an adjusted height to make the plot look better in the widget's viewfield - otherwise the graphics are too close to the top of the window. Use in place of self.__ysz

clearMplData(self)

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Clear all lines, patches, text, etc. from the figure as well as any of our own copies we may be keeping around to facilitate redraws/resizes/etc. of the figure.

resizeGraphics(self, width, height)

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It is time to set a magnitude to our currently normalized lines, and send them to the figure. Here we assume that __normLines & __normPatches are already fully populated.

gcur(self)

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Return cursor value after key is typed

Overrides: gki.GkiKernel.gcur

pre_imcur(self)

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Override this so as to redraw if needed

Overrides: gki.GkiKernel.pre_imcur

taskStart(self, name)

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Because of redirection, this is not always called on the first plot but it should be called for every successive one.

Overrides: gki.GkiKernel.taskStart

taskDone(self, name)

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Called when a task is finished

Overrides: gki.GkiKernel.taskDone

update(self)

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Update for all Tk events. This should not be called unless necessary since it can cause double redraws. It is used in the imcur task to allow window resize (configure) events to be caught while a task is running. Possibly it should be called during long-running tasks too, but that will probably lead to more extra redraws

prepareToRedraw(self)

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This is a hook for things that need to be done before the redraw from metacode. We'll simply clear drawBuffer.

Overrides: gki.GkiKernel.prepareToRedraw

activate(self)

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Not really needed for Tkplot widgets (used to set OpenGL win)

Overrides: gkitkbase.GkiInteractiveTkBase.activate

gki_flush(self, arg, force=False)

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Asked to render current plot immediately. Also used by redraw(). NOTE: This is called multiple times (~8) for a single prow call. There is a performance improvement gained by skipping the resize calculation between taskStart() and taskDone(). This class adds the 'force' arg which forces it to redraw once whether we are "saving draws" or not.

gki_polymarker(self, arg)

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Instructed to draw a GKI polymarker. IRAF only implements points for polymarker, so that makes it simple.

calculateMplTextAngle(self, charUp, textPath)

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From the given GKI charUp and textPath values, calculate the rotation angle to be used for text. Oddly, it seems that textPath and charUp both serve similar purposes, so we will have to look at them both in order to figure the rotation angle. One might have assumed that textPath could have meant "L to R" vs. "R to L", but that does not seem to be the case - it seems to be rotation angle.

redraw(self, o=None)

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Redraw for expose or resize events, also called when page menu is used. This method generally should not be called directly -- call gwidget.tkRedraw() instead since it does some other preparations.