cpython-source-deps/unix/tkUnixMenu.c at tk · python/cpython-source-deps · GitHub

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* tkUnixMenu.c --

* This module implements the UNIX platform-specific features of menus.

* See the file "license.terms" for information on usage and redistribution of

* this file, and for a DISCLAIMER OF ALL WARRANTIES.

#include "tkUnixInt.h"

#include "tkMenu.h"

* Constants used for menu drawing.

#define MENU_MARGIN_WIDTH 2

#define MENU_DIVIDER_HEIGHT 2

#define CASCADE_ARROW_SIZE 4

* Platform specific flags for Unix.

#define ENTRY_HELP_MENU ENTRY_PLATFORM_FLAG1

* Shared with button widget.

MODULE_SCOPE void TkpDrawCheckIndicator(Tk_Window tkwin,

Display *display, Drawable d, int x, int y,

Tk_3DBorder bgBorder, XColor *indicatorColor,

XColor *selectColor, XColor *disColor, int on,

int disabled, int mode);

* Indicator Draw Modes

#define CHECK_BUTTON 0

#define CHECK_MENU 1

#define RADIO_BUTTON 2

#define RADIO_MENU 3

* Procedures used internally.

static void SetHelpMenu(TkMenu *menuPtr);

static void DrawMenuEntryAccelerator(TkMenu *menuPtr,

TkMenuEntry *mePtr, Drawable d, GC gc,

Tk_Font tkfont, const Tk_FontMetrics *fmPtr,

int x, int y, int width, int height, int drawArrow);

static void DrawMenuEntryBackground(TkMenu *menuPtr,

TkMenuEntry *mePtr, Drawable d,

Tk_3DBorder activeBorder, Tk_3DBorder bgBorder,

int x, int y, int width, int heigth);

static void DrawMenuEntryIndicator(TkMenu *menuPtr,

TkMenuEntry *mePtr, Drawable d,

Tk_3DBorder border, XColor *indicatorColor,

XColor *disableColor, Tk_Font tkfont,

const Tk_FontMetrics *fmPtr, int x, int y,

int width, int height);

static void DrawMenuEntryLabel(TkMenu * menuPtr,

TkMenuEntry *mePtr, Drawable d, GC gc,

Tk_Font tkfont, const Tk_FontMetrics *fmPtr,

int x, int y, int width, int height);

static void DrawMenuSeparator(TkMenu *menuPtr,

TkMenuEntry *mePtr, Drawable d, GC gc,

Tk_Font tkfont, const Tk_FontMetrics *fmPtr,

int x, int y, int width, int height);

static void DrawTearoffEntry(TkMenu *menuPtr,

TkMenuEntry *mePtr, Drawable d, GC gc,

Tk_Font tkfont, const Tk_FontMetrics *fmPtr,

int x, int y, int width, int height);

static void DrawMenuUnderline(TkMenu *menuPtr,

TkMenuEntry *mePtr, Drawable d, GC gc,

Tk_Font tkfont, const Tk_FontMetrics *fmPtr,

int x, int y, int width, int height);

static void GetMenuAccelGeometry(TkMenu *menuPtr,

TkMenuEntry *mePtr, Tk_Font tkfont,

const Tk_FontMetrics *fmPtr, int *widthPtr,

int *heightPtr);

static void GetMenuLabelGeometry(TkMenuEntry *mePtr,

Tk_Font tkfont, const Tk_FontMetrics *fmPtr,

int *widthPtr, int *heightPtr);

static void GetMenuIndicatorGeometry(TkMenu *menuPtr,

TkMenuEntry *mePtr, Tk_Font tkfont,

const Tk_FontMetrics *fmPtr,

int *widthPtr, int *heightPtr);

static void GetMenuSeparatorGeometry(TkMenu *menuPtr,

TkMenuEntry *mePtr, Tk_Font tkfont,

const Tk_FontMetrics *fmPtr,

int *widthPtr, int *heightPtr);

static void GetTearoffEntryGeometry(TkMenu *menuPtr,

TkMenuEntry *mePtr, Tk_Font tkfont,

const Tk_FontMetrics *fmPtr, int *widthPtr,

int *heightPtr);

*----------------------------------------------------------------------

* TkpNewMenu --

* Gets the platform-specific piece of the menu. Invoked during idle

* after the generic part of the menu has been created.

* Results:

* Standard TCL error.

* Side effects:

* Allocates any platform specific allocations and places them in the

* platformData field of the menuPtr.

*----------------------------------------------------------------------

int

TkpNewMenu(

TkMenu *menuPtr)

{

SetHelpMenu(menuPtr);

return TCL_OK;

}

*----------------------------------------------------------------------

* TkpDestroyMenu --

* Destroys platform-specific menu structures. Called when the generic

* menu structure is destroyed for the menu.

* Results:

* None.

* Side effects:

* All platform-specific allocations are freed up.

*----------------------------------------------------------------------

void

TkpDestroyMenu(

TCL_UNUSED(TkMenu *))

{

* Nothing to do.

}

*----------------------------------------------------------------------

* TkpDestroyMenuEntry --

* Cleans up platform-specific menu entry items. Called when entry is

* destroyed in the generic code.

* Results:

* None.

* Side effects:

* All platform specific allocations are freed up.

*----------------------------------------------------------------------

void

TkpDestroyMenuEntry(

TCL_UNUSED(TkMenuEntry *))

{

* Nothing to do.

}

*----------------------------------------------------------------------

* TkpConfigureMenuEntry --

* Processes configuration options for menu entries. Called when the

* generic options are processed for the menu.

* Results:

* Returns standard TCL result. If TCL_ERROR is returned, then the

* interp's result contains an error message.

* Side effects:

* Configuration information get set for mePtr; old resources get freed,

* if any need it.

*----------------------------------------------------------------------

int

TkpConfigureMenuEntry(

TkMenuEntry *mePtr)/* Information about menu entry; may or may

* not already have values for some fields. */

{

* If this is a cascade menu, and the child menu exists, check to see if

* the child menu is a help menu.

if ((mePtr->type == CASCADE_ENTRY) && (mePtr->namePtr != NULL)) {

TkMenuReferences *menuRefPtr;

menuRefPtr = TkFindMenuReferencesObj(mePtr->menuPtr->interp,

mePtr->namePtr);

if ((menuRefPtr != NULL) && (menuRefPtr->menuPtr != NULL)) {

SetHelpMenu(menuRefPtr->menuPtr);

}

return TCL_OK;

}

*----------------------------------------------------------------------

* TkpMenuNewEntry --

* Called when a new entry is created in a menu. Fills in platform

* specific data for the entry. The platformEntryData field is used to

* store the indicator diameter for radio button and check box entries.

* Results:

* Standard TCL error.

* Side effects:

* None on Unix.

*----------------------------------------------------------------------

int

TkpMenuNewEntry(

TCL_UNUSED(TkMenuEntry *))

{

return TCL_OK;

}

*----------------------------------------------------------------------

* TkpSetWindowMenuBar --

* Sets up the menu as a menubar in the given window.

* Results:

* None.

* Side effects:

* Recomputes geometry of given window.

*----------------------------------------------------------------------

void

TkpSetWindowMenuBar(

Tk_Window tkwin, /* The window we are setting */

TkMenu *menuPtr) /* The menu we are setting */

{

if (menuPtr == NULL) {

TkUnixSetMenubar(tkwin, NULL);

} else {

TkUnixSetMenubar(tkwin, menuPtr->tkwin);

}

*----------------------------------------------------------------------

* TkpSetMainMenuBar --

* Called when a toplevel widget is brought to front. On the Macintosh,

* sets up the menubar that goes accross the top of the main monitor. On

* other platforms, nothing is necessary.

* Results:

* None.

* Side effects:

* Recompute geometry of given window.

*----------------------------------------------------------------------

void

Tk_SetMainMenubar(

TCL_UNUSED(Tcl_Interp *),

TCL_UNUSED(Tk_Window),

TCL_UNUSED(const char *))

{

* Nothing to do.

}

*----------------------------------------------------------------------

* GetMenuIndicatorGeometry --

* Fills out the geometry of the indicator in a menu item. Note that the

* mePtr->height field must have already been filled in by

* GetMenuLabelGeometry since this height depends on the label height.

* Results:

* widthPtr and heightPtr point to the new geometry values.

* Side effects:

* None.

*----------------------------------------------------------------------

static void

GetMenuIndicatorGeometry(

TkMenu *menuPtr, /* The menu we are drawing. */

TkMenuEntry *mePtr, /* The entry we are interested in. */

TCL_UNUSED(Tk_Font), /* The precalculated font */

TCL_UNUSED(const Tk_FontMetrics *), /* The precalculated metrics */

int *widthPtr, /* The resulting width */

int *heightPtr) /* The resulting height */

{

int borderWidth;

if ((mePtr->type == CHECK_BUTTON_ENTRY)

|| (mePtr->type == RADIO_BUTTON_ENTRY)) {

if (!mePtr->hideMargin && mePtr->indicatorOn) {

if ((mePtr->image != NULL) || (mePtr->bitmapPtr != NULL)) {

*widthPtr = (14 * mePtr->height) / 10;

*heightPtr = mePtr->height;

if (mePtr->type == CHECK_BUTTON_ENTRY) {

mePtr->platformEntryData = (TkMenuPlatformEntryData)

INT2PTR((65 * mePtr->height) / 100);

} else {

mePtr->platformEntryData = (TkMenuPlatformEntryData)

INT2PTR((75 * mePtr->height) / 100);

}

} else {

*widthPtr = *heightPtr = mePtr->height;

if (mePtr->type == CHECK_BUTTON_ENTRY) {

mePtr->platformEntryData = (TkMenuPlatformEntryData)

INT2PTR((80 * mePtr->height) / 100);

} else {

mePtr->platformEntryData = (TkMenuPlatformEntryData)

INT2PTR(mePtr->height);

}

} else {

Tk_GetPixelsFromObj(NULL, menuPtr->tkwin, menuPtr->borderWidthObj,

&borderWidth);

*heightPtr = 0;

*widthPtr = borderWidth;

}

} else {

Tk_GetPixelsFromObj(NULL, menuPtr->tkwin, menuPtr->borderWidthObj,

&borderWidth);

*heightPtr = 0;

*widthPtr = borderWidth;

}

*----------------------------------------------------------------------

* GetMenuAccelGeometry --

* Get the geometry of the accelerator area of a menu item.

* Results:

* heightPtr and widthPtr are set.

* Side effects:

* None.

*----------------------------------------------------------------------

static void

GetMenuAccelGeometry(

TkMenu *menuPtr, /* The menu was are drawing */

TkMenuEntry *mePtr, /* The entry we are getting the geometry for */

Tk_Font tkfont, /* The precalculated font */

const Tk_FontMetrics *fmPtr,/* The precalculated font metrics */

int *widthPtr, /* The width of the acclerator area */

int *heightPtr) /* The height of the accelerator area */

{

*heightPtr = fmPtr->linespace;

if (mePtr->type == CASCADE_ENTRY) {

double scalingLevel = TkScalingLevel(menuPtr->tkwin);

int arrowWidth = (int)(CASCADE_ARROW_SIZE * scalingLevel) + 1;

*widthPtr = 2 * arrowWidth;

} else if ((menuPtr->menuType != MENUBAR) && (mePtr->accelPtr != NULL)) {

const char *accel = Tcl_GetString(mePtr->accelPtr);

*widthPtr = Tk_TextWidth(tkfont, accel, mePtr->accelLength);

} else {

*widthPtr = 0;

}

*----------------------------------------------------------------------

* DrawMenuEntryBackground --

* This procedure draws the background part of a menu.

* Results:

* None.

* Side effects:

* Commands are output to X to display the menu in its current mode.

*----------------------------------------------------------------------

static void

DrawMenuEntryBackground(

TkMenu *menuPtr, /* The menu we are drawing */

TkMenuEntry *mePtr, /* The entry we are drawing. */

Drawable d, /* The drawable we are drawing into */

Tk_3DBorder activeBorder, /* The border for an active item */

Tk_3DBorder bgBorder, /* The background border */

int x, /* Left coordinate of entry rect */

int y, /* Right coordinate of entry rect */

int width, /* Width of entry rect */

int height) /* Height of entry rect */

{

if (mePtr->state == ENTRY_ACTIVE) {

int relief;

int activeBorderWidth;

bgBorder = activeBorder;

if ((menuPtr->menuType == MENUBAR)

&& ((menuPtr->postedCascade == NULL)

|| (menuPtr->postedCascade != mePtr))) {

relief = TK_RELIEF_FLAT;

} else {

relief = menuPtr->activeRelief;

}

Tk_GetPixelsFromObj(NULL, menuPtr->tkwin,

menuPtr->activeBorderWidthPtr, &activeBorderWidth);

Tk_Fill3DRectangle(menuPtr->tkwin, d, bgBorder, x, y, width, height,

activeBorderWidth, relief);

} else {

Tk_Fill3DRectangle(menuPtr->tkwin, d, bgBorder, x, y, width, height,

0, TK_RELIEF_FLAT);

}

*----------------------------------------------------------------------

* DrawMenuEntryAccelerator --

* This procedure draws the background part of a menu.

* Results:

* None.

* Side effects:

* Commands are output to X to display the menu in its current mode.

*----------------------------------------------------------------------

static void

DrawMenuEntryAccelerator(

TkMenu *menuPtr, /* The menu we are drawing */

TkMenuEntry *mePtr, /* The entry we are drawing */

Drawable d, /* The drawable we are drawing into */

GC gc, /* The precalculated gc to draw with */

Tk_Font tkfont, /* The precalculated font */

const Tk_FontMetrics *fmPtr,/* The precalculated metrics */

int x, /* Left coordinate of entry rect */

int y, /* Top coordinate of entry rect */

int width, /* Width of entry */

int height, /* Height of entry */

int drawArrow) /* Whether or not to draw arrow. */

{

int borderWidth, activeBorderWidth;

double scalingLevel = TkScalingLevel(menuPtr->tkwin);

int arrowSize = (int)(CASCADE_ARROW_SIZE * scalingLevel);

int arrowWidth = arrowSize + 1, arrowHeight = 2*arrowSize + 1;

XPoint points[4];

* Draw accelerator or cascade arrow.

if (menuPtr->menuType == MENUBAR) {

return;

}

Tk_GetPixelsFromObj(NULL, menuPtr->tkwin, menuPtr->borderWidthObj,

&borderWidth);

Tk_GetPixelsFromObj(NULL, menuPtr->tkwin, menuPtr->activeBorderWidthPtr,

&activeBorderWidth);

if ((mePtr->type == CASCADE_ENTRY) && drawArrow) {

* The value of points[0].x below is based on the following equations:

* points[0].x + arrowWidth + cascadeOffset = menuWidth

* cascadeOffset = borderWidth + activeBorderWidth + 2*scalingLevel

* (see function AdjustMenuCoords() in file tkMenuDraw.c)

* menuWidth = x + width + borderWidth

points[0].x = x + width - activeBorderWidth - (int)round(2*scalingLevel)

- arrowWidth;

points[0].y = y + (height - arrowHeight)/2;

points[1].x = points[0].x;

points[1].y = points[0].y + arrowHeight - 1;

points[2].x = points[0].x + arrowSize;

points[2].y = points[0].y + arrowSize;

points[3].x = points[0].x;

points[3].y = points[0].y;

XFillPolygon(Tk_Display(menuPtr->tkwin), d, gc, points, 3, Complex,

CoordModeOrigin);

XDrawLines(Tk_Display(menuPtr->tkwin), d, gc, points, 4,

CoordModeOrigin);

/* Work around bug [77527326e5] */

XDrawPoint(Tk_Display(menuPtr->tkwin), d, gc, points[2].x, points[2].y);

} else if (mePtr->accelPtr != NULL) {

const char *accel = Tcl_GetString(mePtr->accelPtr);

int left = x + mePtr->labelWidth + activeBorderWidth

+ mePtr->indicatorSpace;

if (menuPtr->menuType == MENUBAR) {

left += (int)round(5*scalingLevel);

}

Tk_DrawChars(menuPtr->display, d, gc, tkfont, accel,

mePtr->accelLength, left,

(y + (height + fmPtr->ascent - fmPtr->descent) / 2));

}

*----------------------------------------------------------------------

* DrawMenuEntryIndicator --

* This procedure draws the background part of a menu.

* Results:

* None.

* Side effects:

* Commands are output to X to display the menu in its current mode.

*----------------------------------------------------------------------

static void

DrawMenuEntryIndicator(

TkMenu *menuPtr, /* The menu we are drawing */

TkMenuEntry *mePtr, /* The entry we are drawing */

Drawable d, /* The drawable to draw into */

Tk_3DBorder border, /* The background color */

XColor *indicatorColor, /* The color to draw indicators with */

XColor *disableColor, /* The color use use when disabled */

TCL_UNUSED(Tk_Font), /* The font to draw with */

TCL_UNUSED(const Tk_FontMetrics *), /* The font metrics of the font */

int x, /* The left of the entry rect */

int y, /* The top of the entry rect */

TCL_UNUSED(int), /* Width of menu entry */

int height) /* Height of menu entry */

{

* Draw check-button indicator.

if ((mePtr->type == CHECK_BUTTON_ENTRY) && mePtr->indicatorOn) {

int top, left, activeBorderWidth;

double scalingLevel = TkScalingLevel(menuPtr->tkwin);

int disabled = (mePtr->state == ENTRY_DISABLED);

XColor *bg;

Tk_GetPixelsFromObj(NULL, menuPtr->tkwin,

menuPtr->activeBorderWidthPtr, &activeBorderWidth);

bg = Tk_3DBorderColor(border);

top = y + height/2;

left = x + activeBorderWidth

+ (int)round(DECORATION_BORDER_WIDTH * scalingLevel)

+ mePtr->indicatorSpace/2;

TkpDrawCheckIndicator(menuPtr->tkwin, menuPtr->display, d, left, top,

border, indicatorColor, bg, disableColor,

(mePtr->entryFlags & ENTRY_SELECTED), disabled, CHECK_MENU);

}

* Draw radio-button indicator.

if ((mePtr->type == RADIO_BUTTON_ENTRY) && mePtr->indicatorOn) {

int top, left, activeBorderWidth;

double scalingLevel = TkScalingLevel(menuPtr->tkwin);

int disabled = (mePtr->state == ENTRY_DISABLED);

XColor *bg;

Tk_GetPixelsFromObj(NULL, menuPtr->tkwin,

menuPtr->activeBorderWidthPtr, &activeBorderWidth);

bg = Tk_3DBorderColor(border);

top = y + height/2;

left = x + activeBorderWidth

+ (int)round(DECORATION_BORDER_WIDTH * scalingLevel)

+ mePtr->indicatorSpace/2;

TkpDrawCheckIndicator(menuPtr->tkwin, menuPtr->display, d, left, top,

border, indicatorColor, bg, disableColor,

(mePtr->entryFlags & ENTRY_SELECTED), disabled, RADIO_MENU);

}

*----------------------------------------------------------------------

* DrawMenuSeparator --

* This procedure draws a separator menu item.

* Results:

* None.

* Side effects:

* Commands are output to X to display the menu in its current mode.

*----------------------------------------------------------------------

static void

DrawMenuSeparator(

TkMenu *menuPtr, /* The menu we are drawing */

TCL_UNUSED(TkMenuEntry *), /* The entry we are drawing */

Drawable d, /* The drawable we are using */

TCL_UNUSED(GC), /* The gc to draw into */

TCL_UNUSED(Tk_Font), /* The font to draw with */

TCL_UNUSED(const Tk_FontMetrics *), /* The font metrics from the font */

int x, int y,

int width, int height)

{

XPoint points[2];

Tk_3DBorder border;

if (menuPtr->menuType == MENUBAR) {

return;

}

points[0].x = x;

points[0].y = y + height/2;

points[1].x = x + width - 1;

points[1].y = points[0].y;

border = Tk_Get3DBorderFromObj(menuPtr->tkwin, menuPtr->borderPtr);

Tk_Draw3DPolygon(menuPtr->tkwin, d, border, points, 2, 1,

TK_RELIEF_RAISED);

}

*----------------------------------------------------------------------

* DrawMenuEntryLabel --

* This procedure draws the label part of a menu.

* Results:

* None.

* Side effects:

* Commands are output to X to display the menu in its current mode.

*----------------------------------------------------------------------

static void

DrawMenuEntryLabel(

TkMenu *menuPtr, /* The menu we are drawing. */

TkMenuEntry *mePtr, /* The entry we are drawing. */

Drawable d, /* What we are drawing into. */

GC gc, /* The gc we are drawing into.*/

Tk_Font tkfont, /* The precalculated font. */

const Tk_FontMetrics *fmPtr,/* The precalculated font metrics. */

int x, /* Left edge. */

int y, /* Top edge. */

int width, /* width of entry. */

int height) /* height of entry. */

{

int indicatorSpace = mePtr->indicatorSpace;

int activeBorderWidth, leftEdge, imageHeight, imageWidth;

int textHeight = 0, textWidth = 0; /* stop GCC warning */

int haveImage = 0, haveText = 0;

int imageXOffset = 0, imageYOffset = 0;

int textXOffset = 0, textYOffset = 0;

Tk_GetPixelsFromObj(NULL, menuPtr->tkwin, menuPtr->activeBorderWidthPtr,

&activeBorderWidth);

leftEdge = x + indicatorSpace + activeBorderWidth;

if (menuPtr->menuType == MENUBAR) {

double scalingLevel = TkScalingLevel(menuPtr->tkwin);

leftEdge += (int)round(5*scalingLevel);

}

* Work out what we will need to draw first.

if (mePtr->image != NULL) {

Tk_SizeOfImage(mePtr->image, &imageWidth, &imageHeight);

haveImage = 1;

} else if (mePtr->bitmapPtr != NULL) {

Pixmap bitmap = Tk_GetBitmapFromObj(menuPtr->tkwin, mePtr->bitmapPtr);

Tk_SizeOfBitmap(menuPtr->display, bitmap, &imageWidth, &imageHeight);

haveImage = 1;

}

if (!haveImage || (mePtr->compound != COMPOUND_NONE)) {

if (mePtr->labelLength > 0) {

const char *label = Tcl_GetString(mePtr->labelPtr);

textWidth = Tk_TextWidth(tkfont, label, mePtr->labelLength);

textHeight = fmPtr->linespace;

haveText = 1;

}

* Now work out what the relative positions are.

if (haveImage && haveText) {

int fullWidth = (imageWidth > textWidth ? imageWidth : textWidth);

double scalingLevel = TkScalingLevel(menuPtr->tkwin);

int scaled2 = (int)round(2*scalingLevel);

switch ((enum compound) mePtr->compound) {

case COMPOUND_TOP:

textXOffset = (fullWidth - textWidth)/2;

textYOffset = imageHeight/2 + scaled2;

imageXOffset = (fullWidth - imageWidth)/2;

imageYOffset = -textHeight/2;

break;

case COMPOUND_BOTTOM:

textXOffset = (fullWidth - textWidth)/2;

textYOffset = -imageHeight/2;

imageXOffset = (fullWidth - imageWidth)/2;

imageYOffset = textHeight/2 + scaled2;

break;

case COMPOUND_LEFT:

* Position image in the indicator space to the left of the

* entries, unless this entry is a radio|check button because then

* the indicator space will be used.

textXOffset = imageWidth + scaled2;

textYOffset = 0;

imageXOffset = 0;

imageYOffset = 0;

if ((mePtr->type != CHECK_BUTTON_ENTRY)

&& (mePtr->type != RADIO_BUTTON_ENTRY)) {

textXOffset -= indicatorSpace;

if (textXOffset < 0) {

textXOffset = 0;

}

imageXOffset = -indicatorSpace;

}

break;

case COMPOUND_RIGHT:

textXOffset = 0;

textYOffset = 0;

imageXOffset = textWidth + scaled2;

imageYOffset = 0;

break;

case COMPOUND_CENTER:

textXOffset = (fullWidth - textWidth)/2;

textYOffset = 0;

imageXOffset = (fullWidth - imageWidth)/2;

imageYOffset = 0;

break;

case COMPOUND_NONE:

break;

}

} else {

textXOffset = 0;

textYOffset = 0;

imageXOffset = 0;

imageYOffset = 0;

}

* Draw label and/or bitmap or image for entry.

if (mePtr->image != NULL) {

if ((mePtr->selectImage != NULL)

&& (mePtr->entryFlags & ENTRY_SELECTED)) {

Tk_RedrawImage(mePtr->selectImage, 0, 0,

imageWidth, imageHeight, d, leftEdge + imageXOffset,

(int) (y + (mePtr->height-imageHeight)/2 + imageYOffset));

} else {

Tk_RedrawImage(mePtr->image, 0, 0, imageWidth,

imageHeight, d, leftEdge + imageXOffset,

(int) (y + (mePtr->height-imageHeight)/2 + imageYOffset));

}

} else if (mePtr->bitmapPtr != NULL) {

Pixmap bitmap = Tk_GetBitmapFromObj(menuPtr->tkwin, mePtr->bitmapPtr);

XCopyPlane(menuPtr->display, bitmap, d, gc, 0, 0,

(unsigned) imageWidth, (unsigned) imageHeight,

leftEdge + imageXOffset,

(int) (y + (mePtr->height - imageHeight)/2 + imageYOffset), 1);

}

if ((mePtr->compound != COMPOUND_NONE) || !haveImage) {

int baseline = y + (height + fmPtr->ascent - fmPtr->descent) / 2;

if (mePtr->labelLength > 0) {

const char *label = Tcl_GetString(mePtr->labelPtr);

Tk_DrawChars(menuPtr->display, d, gc, tkfont, label,

mePtr->labelLength, leftEdge + textXOffset,

baseline + textYOffset);

DrawMenuUnderline(menuPtr, mePtr, d, gc, tkfont, fmPtr,

x + textXOffset, y + textYOffset,

width, height);

}

if (mePtr->state == ENTRY_DISABLED) {

if (menuPtr->disabledFgPtr == NULL) {

XFillRectangle(menuPtr->display, d, menuPtr->disabledGC, x, y,

(unsigned) width, (unsigned) height);

} else if ((mePtr->image != NULL)

&& (menuPtr->disabledImageGC != NULL)) {

XFillRectangle(menuPtr->display, d, menuPtr->disabledImageGC,

leftEdge + imageXOffset,

(int) (y + (mePtr->height - imageHeight)/2 + imageYOffset),

(unsigned) imageWidth, (unsigned) imageHeight);

}

*----------------------------------------------------------------------

* DrawMenuUnderline --

* On appropriate platforms, draw the underline character for the menu.

* Results:

* None.

* Side effects:

* Commands are output to X to display the menu in its current mode.

*----------------------------------------------------------------------

static void

DrawMenuUnderline(

TkMenu *menuPtr, /* The menu to draw into */

TkMenuEntry *mePtr, /* The entry we are drawing */

Drawable d, /* What we are drawing into */

GC gc, /* The gc to draw into */

Tk_Font tkfont, /* The precalculated font */

const Tk_FontMetrics *fmPtr,/* The precalculated font metrics */

int x, int y,

TCL_UNUSED(int), int height)

{

if (mePtr->labelPtr != NULL) {

int len;

len = Tcl_GetCharLength(mePtr->labelPtr);

if (mePtr->underline < len && mePtr->underline >= -len) {

int activeBorderWidth, leftEdge, ch;

const char *label, *start, *end;

label = Tcl_GetString(mePtr->labelPtr);

start = Tcl_UtfAtIndex(label, (mePtr->underline < 0) ? mePtr->underline + len : mePtr->underline);

end = start + Tcl_UtfToUniChar(start, &ch);

Tk_GetPixelsFromObj(NULL, menuPtr->tkwin,

menuPtr->activeBorderWidthPtr, &activeBorderWidth);

leftEdge = x + mePtr->indicatorSpace + activeBorderWidth;

if (menuPtr->menuType == MENUBAR) {

double scalingLevel = TkScalingLevel(menuPtr->tkwin);

leftEdge += (int)round(5*scalingLevel);

}

Tk_UnderlineChars(menuPtr->display, d, gc, tkfont, label, leftEdge,

y + (height + fmPtr->ascent - fmPtr->descent) / 2,

start - label, end - label);

}

*----------------------------------------------------------------------

* TkpPostMenu --

* Posts a menu on the screen so that the top left corner of the

* specified entry is located at the point (x, y) in screen coordinates.

* If the entry parameter is negative, the upper left corner of the

* menu itself is placed at the point.

* Results:

* None.

* Side effects:

* The menu is posted and handled.

*----------------------------------------------------------------------

int

TkpPostMenu(

Tcl_Interp *interp,

TkMenu *menuPtr,

int x, int y, Tcl_Size index)

{

return TkpPostTearoffMenu(interp, menuPtr, x, y, index);

}

*----------------------------------------------------------------------

* TkpPostTearoffMenu --

* Posts a tearoff menu on the screen so that the top left corner of the

* specified entry is located at the point (x, y) in screen coordinates.

* If the index parameter is negative, the upper left corner of the menu

* itself is placed at the point. On unix this is called when posting

* any menu. Adjusts the menu's position so that it fits on the screen,

* and maps and raises the menu.

* Results:

* Returns a standard Tcl Error.

* Side effects:

* The menu is posted.

*----------------------------------------------------------------------

int

TkpPostTearoffMenu(

TCL_UNUSED(Tcl_Interp *), /* The interpreter of the menu */

TkMenu *menuPtr, /* The menu we are posting */

int x, int y, Tcl_Size index) /* The root X,Y coordinates where the

* specified entry will be posted */

{

int vRootX, vRootY, vRootWidth, vRootHeight;

int result;

TkActivateMenuEntry(menuPtr, TCL_INDEX_NONE);

TkRecomputeMenu(menuPtr);

result = TkPostCommand(menuPtr);

if (result != TCL_OK) {

return result;

}

* The post commands could have deleted the menu, which means we are dead

* and should go away.

if (menuPtr->tkwin == NULL) {

return TCL_OK;

}

* Adjust the menu y position so that the specified entry will be located

* at the given coordinates.

if (index >= menuPtr->numEntries) {

index = menuPtr->numEntries - 1;

}

if (index >= 0) {

y -= menuPtr->entries[index]->y;

}

* Adjust the position of the menu if necessary to keep it visible on the

* screen. There are two special tricks to make this work right:

* 1. If a virtual root window manager is being used then the coordinates

* are in the virtual root window of menuPtr's parent; since the menu

* uses override-redirect mode it will be in the *real* root window for

* the screen, so we have to map the coordinates from the virtual root

* (if any) to the real root. Can't get the virtual root from the menu

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cpython-source-deps/unix/tkUnixMenu.c at tk · python/cpython-source-deps · GitHub

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