diff options
Diffstat (limited to 'tk8.6/generic/ttk/ttkLabel.c')
| -rw-r--r-- | tk8.6/generic/ttk/ttkLabel.c | 698 |
1 files changed, 0 insertions, 698 deletions
diff --git a/tk8.6/generic/ttk/ttkLabel.c b/tk8.6/generic/ttk/ttkLabel.c deleted file mode 100644 index 1037840..0000000 --- a/tk8.6/generic/ttk/ttkLabel.c +++ /dev/null @@ -1,698 +0,0 @@ -/* - * text, image, and label elements. - * - * The label element combines text and image elements, - * with layout determined by the "-compound" option. - * - */ - -#include <tcl.h> -#include <tkInt.h> -#include "ttkTheme.h" - -/*---------------------------------------------------------------------- - * +++ Text element. - * - * This element displays a textual label in the foreground color. - * - * Optionally underlines the mnemonic character if the -underline resource - * is present and >= 0. - */ - -typedef struct { - /* - * Element options: - */ - Tcl_Obj *textObj; - Tcl_Obj *fontObj; - Tcl_Obj *foregroundObj; - Tcl_Obj *underlineObj; - Tcl_Obj *widthObj; - Tcl_Obj *anchorObj; - Tcl_Obj *justifyObj; - Tcl_Obj *wrapLengthObj; - Tcl_Obj *embossedObj; - - /* - * Computed resources: - */ - Tk_Font tkfont; - Tk_TextLayout textLayout; - int width; - int height; - int embossed; - -} TextElement; - -/* Text element options table. - * NB: Keep in sync with label element option table. - */ -static Ttk_ElementOptionSpec TextElementOptions[] = { - { "-text", TK_OPTION_STRING, - Tk_Offset(TextElement,textObj), "" }, - { "-font", TK_OPTION_FONT, - Tk_Offset(TextElement,fontObj), DEFAULT_FONT }, - { "-foreground", TK_OPTION_COLOR, - Tk_Offset(TextElement,foregroundObj), "black" }, - { "-underline", TK_OPTION_INT, - Tk_Offset(TextElement,underlineObj), "-1"}, - { "-width", TK_OPTION_INT, - Tk_Offset(TextElement,widthObj), "-1"}, - { "-anchor", TK_OPTION_ANCHOR, - Tk_Offset(TextElement,anchorObj), "w"}, - { "-justify", TK_OPTION_JUSTIFY, - Tk_Offset(TextElement,justifyObj), "left" }, - { "-wraplength", TK_OPTION_PIXELS, - Tk_Offset(TextElement,wrapLengthObj), "0" }, - { "-embossed", TK_OPTION_INT, - Tk_Offset(TextElement,embossedObj), "0"}, - { NULL, 0, 0, NULL } -}; - -static int TextSetup(TextElement *text, Tk_Window tkwin) -{ - const char *string = Tcl_GetString(text->textObj); - Tk_Justify justify = TK_JUSTIFY_LEFT; - int wrapLength = 0; - - text->tkfont = Tk_GetFontFromObj(tkwin, text->fontObj); - Tk_GetJustifyFromObj(NULL, text->justifyObj, &justify); - Tk_GetPixelsFromObj(NULL, tkwin, text->wrapLengthObj, &wrapLength); - Tcl_GetBooleanFromObj(NULL, text->embossedObj, &text->embossed); - - text->textLayout = Tk_ComputeTextLayout( - text->tkfont, string, -1/*numChars*/, wrapLength, justify, - 0/*flags*/, &text->width, &text->height); - - return 1; -} - -/* - * TextReqWidth -- compute the requested width of a text element. - * - * If -width is positive, use that as the width - * If -width is negative, use that as the minimum width - * If not specified or empty, use the natural size of the text - */ - -static int TextReqWidth(TextElement *text) -{ - int reqWidth; - - if ( text->widthObj - && Tcl_GetIntFromObj(NULL, text->widthObj, &reqWidth) == TCL_OK) - { - int avgWidth = Tk_TextWidth(text->tkfont, "0", 1); - if (reqWidth <= 0) { - int specWidth = avgWidth * -reqWidth; - if (specWidth > text->width) - return specWidth; - } else { - return avgWidth * reqWidth; - } - } - return text->width; -} - -static void TextCleanup(TextElement *text) -{ - Tk_FreeTextLayout(text->textLayout); -} - -/* - * TextDraw -- - * Draw a text element. - * Called by TextElementDraw() and LabelElementDraw(). - */ -static void TextDraw(TextElement *text, Tk_Window tkwin, Drawable d, Ttk_Box b) -{ - XColor *color = Tk_GetColorFromObj(tkwin, text->foregroundObj); - int underline = -1; - XGCValues gcValues; - GC gc1, gc2; - Tk_Anchor anchor = TK_ANCHOR_CENTER; - TkRegion clipRegion = NULL; - - gcValues.font = Tk_FontId(text->tkfont); - gcValues.foreground = color->pixel; - gc1 = Tk_GetGC(tkwin, GCFont | GCForeground, &gcValues); - gcValues.foreground = WhitePixelOfScreen(Tk_Screen(tkwin)); - gc2 = Tk_GetGC(tkwin, GCFont | GCForeground, &gcValues); - - /* - * Place text according to -anchor: - */ - Tk_GetAnchorFromObj(NULL, text->anchorObj, &anchor); - b = Ttk_AnchorBox(b, text->width, text->height, anchor); - - /* - * Clip text if it's too wide: - */ - if (b.width < text->width) { - XRectangle rect; - - clipRegion = TkCreateRegion(); - rect.x = b.x; - rect.y = b.y; - rect.width = b.width + (text->embossed ? 1 : 0); - rect.height = b.height + (text->embossed ? 1 : 0); - TkUnionRectWithRegion(&rect, clipRegion, clipRegion); - TkSetRegion(Tk_Display(tkwin), gc1, clipRegion); - TkSetRegion(Tk_Display(tkwin), gc2, clipRegion); -#ifdef HAVE_XFT - TkUnixSetXftClipRegion(clipRegion); -#endif - } - - if (text->embossed) { - Tk_DrawTextLayout(Tk_Display(tkwin), d, gc2, - text->textLayout, b.x+1, b.y+1, 0/*firstChar*/, -1/*lastChar*/); - } - Tk_DrawTextLayout(Tk_Display(tkwin), d, gc1, - text->textLayout, b.x, b.y, 0/*firstChar*/, -1/*lastChar*/); - - Tcl_GetIntFromObj(NULL, text->underlineObj, &underline); - if (underline >= 0) { - if (text->embossed) { - Tk_UnderlineTextLayout(Tk_Display(tkwin), d, gc2, - text->textLayout, b.x+1, b.y+1, underline); - } - Tk_UnderlineTextLayout(Tk_Display(tkwin), d, gc1, - text->textLayout, b.x, b.y, underline); - } - - if (clipRegion != NULL) { -#ifdef HAVE_XFT - TkUnixSetXftClipRegion(None); -#endif - XSetClipMask(Tk_Display(tkwin), gc1, None); - XSetClipMask(Tk_Display(tkwin), gc2, None); - TkDestroyRegion(clipRegion); - } - Tk_FreeGC(Tk_Display(tkwin), gc1); - Tk_FreeGC(Tk_Display(tkwin), gc2); -} - -static void TextElementSize( - void *clientData, void *elementRecord, Tk_Window tkwin, - int *widthPtr, int *heightPtr, Ttk_Padding *paddingPtr) -{ - TextElement *text = elementRecord; - - if (!TextSetup(text, tkwin)) - return; - - *heightPtr = text->height; - *widthPtr = TextReqWidth(text); - - TextCleanup(text); - - return; -} - -static void TextElementDraw( - void *clientData, void *elementRecord, Tk_Window tkwin, - Drawable d, Ttk_Box b, Ttk_State state) -{ - TextElement *text = elementRecord; - if (TextSetup(text, tkwin)) { - TextDraw(text, tkwin, d, b); - TextCleanup(text); - } -} - -static Ttk_ElementSpec TextElementSpec = { - TK_STYLE_VERSION_2, - sizeof(TextElement), - TextElementOptions, - TextElementSize, - TextElementDraw -}; - -/*---------------------------------------------------------------------- - * +++ Image element. - * Draws an image. - */ - -typedef struct { - Tcl_Obj *imageObj; - Tcl_Obj *stippleObj; /* For TTK_STATE_DISABLED */ - Tcl_Obj *backgroundObj; /* " " */ - - Ttk_ImageSpec *imageSpec; - Tk_Image tkimg; - int width; - int height; -} ImageElement; - -/* ===> NB: Keep in sync with label element option table. <=== - */ -static Ttk_ElementOptionSpec ImageElementOptions[] = { - { "-image", TK_OPTION_STRING, - Tk_Offset(ImageElement,imageObj), "" }, - { "-stipple", TK_OPTION_STRING, /* Really: TK_OPTION_BITMAP */ - Tk_Offset(ImageElement,stippleObj), "gray50" }, - { "-background", TK_OPTION_COLOR, - Tk_Offset(ImageElement,backgroundObj), DEFAULT_BACKGROUND }, - { NULL, 0, 0, NULL } -}; - -/* - * ImageSetup() -- - * Look up the Tk_Image from the image element's imageObj resource. - * Caller must release the image with ImageCleanup(). - * - * Returns: - * 1 if successful, 0 if there was an error (unreported) - * or the image resource was not specified. - */ - -static int ImageSetup( - ImageElement *image, Tk_Window tkwin, Ttk_State state) -{ - - if (!image->imageObj) { - return 0; - } - image->imageSpec = TtkGetImageSpec(NULL, tkwin, image->imageObj); - if (!image->imageSpec) { - return 0; - } - image->tkimg = TtkSelectImage(image->imageSpec, state); - if (!image->tkimg) { - TtkFreeImageSpec(image->imageSpec); - return 0; - } - Tk_SizeOfImage(image->tkimg, &image->width, &image->height); - - return 1; -} - -static void ImageCleanup(ImageElement *image) -{ - TtkFreeImageSpec(image->imageSpec); -} - -#ifndef MAC_OSX_TK -/* - * StippleOver -- - * Draw a stipple over the image area, to make it look "grayed-out" - * when TTK_STATE_DISABLED is set. - */ -static void StippleOver( - ImageElement *image, Tk_Window tkwin, Drawable d, int x, int y) -{ - Pixmap stipple = Tk_AllocBitmapFromObj(NULL, tkwin, image->stippleObj); - XColor *color = Tk_GetColorFromObj(tkwin, image->backgroundObj); - - if (stipple != None) { - unsigned long mask = GCFillStyle | GCStipple | GCForeground; - XGCValues gcvalues; - GC gc; - gcvalues.foreground = color->pixel; - gcvalues.fill_style = FillStippled; - gcvalues.stipple = stipple; - gc = Tk_GetGC(tkwin, mask, &gcvalues); - XFillRectangle(Tk_Display(tkwin),d,gc,x,y,image->width,image->height); - Tk_FreeGC(Tk_Display(tkwin), gc); - Tk_FreeBitmapFromObj(tkwin, image->stippleObj); - } -} -#endif - -static void ImageDraw( - ImageElement *image, Tk_Window tkwin,Drawable d,Ttk_Box b,Ttk_State state) -{ - int width = image->width, height = image->height; - - /* Clip width and height to remain within window bounds: - */ - if (b.x + width > Tk_Width(tkwin)) { - width = Tk_Width(tkwin) - b.x; - } - if (b.y + height > Tk_Height(tkwin)) { - height = Tk_Height(tkwin) - b.y; - } - - if (height <= 0 || width <= 0) { - /* Completely clipped - bail out. - */ - return; - } - - Tk_RedrawImage(image->tkimg, 0,0, width, height, d, b.x, b.y); - - /* If we're disabled there's no state-specific 'disabled' image, - * stipple the image. - * @@@ Possibly: Don't do disabled-stippling at all; - * @@@ it's ugly and out of fashion. - * Do not stipple at all under Aqua, just draw the image: it shows up - * as a white rectangle otherwise. - */ - - - if (state & TTK_STATE_DISABLED) { - if (TtkSelectImage(image->imageSpec, 0ul) == image->tkimg) { -#ifndef MAC_OSX_TK - StippleOver(image, tkwin, d, b.x,b.y); -#endif - } - } -} - -static void ImageElementSize( - void *clientData, void *elementRecord, Tk_Window tkwin, - int *widthPtr, int *heightPtr, Ttk_Padding *paddingPtr) -{ - ImageElement *image = elementRecord; - - if (ImageSetup(image, tkwin, 0)) { - *widthPtr = image->width; - *heightPtr = image->height; - ImageCleanup(image); - } -} - -static void ImageElementDraw( - void *clientData, void *elementRecord, Tk_Window tkwin, - Drawable d, Ttk_Box b, Ttk_State state) -{ - ImageElement *image = elementRecord; - - if (ImageSetup(image, tkwin, state)) { - ImageDraw(image, tkwin, d, b, state); - ImageCleanup(image); - } -} - -static Ttk_ElementSpec ImageElementSpec = { - TK_STYLE_VERSION_2, - sizeof(ImageElement), - ImageElementOptions, - ImageElementSize, - ImageElementDraw -}; - -/*------------------------------------------------------------------------ - * +++ Label element. - * - * Displays an image and/or text, as determined by the -compound option. - * - * Differences from Tk 8.4 compound elements: - * - * This adds two new values for the -compound option, "text" - * and "image". (This is useful for configuring toolbars to - * display icons, text and icons, or text only, as found in - * many browsers.) - * - * "-compound none" is supported, but I'd like to get rid of it; - * it makes the logic more complex, and the only benefit is - * backwards compatibility with Tk < 8.3.0 scripts. - * - * This adds a new resource, -space, for determining how much - * space to leave between the text and image; Tk 8.4 reuses the - * -padx or -pady option for this purpose. - * - * -width always specifies the length in characters of the text part; - * in Tk 8.4 it's either characters or pixels, depending on the - * value of -compound. - * - * Negative values of -width are interpreted as a minimum width - * on all platforms, not just on Windows. - * - * Tk 8.4 ignores -padx and -pady if -compound is set to "none". - * Here, padding is handled by a different element. - */ - -typedef struct { - /* - * Element options: - */ - Tcl_Obj *compoundObj; - Tcl_Obj *spaceObj; - TextElement text; - ImageElement image; - - /* - * Computed values (see LabelSetup) - */ - Ttk_Compound compound; - int space; - int totalWidth, totalHeight; -} LabelElement; - -static Ttk_ElementOptionSpec LabelElementOptions[] = { - { "-compound", TK_OPTION_ANY, - Tk_Offset(LabelElement,compoundObj), "none" }, - { "-space", TK_OPTION_PIXELS, - Tk_Offset(LabelElement,spaceObj), "4" }, - - /* Text element part: - * NB: Keep in sync with TextElementOptions. - */ - { "-text", TK_OPTION_STRING, - Tk_Offset(LabelElement,text.textObj), "" }, - { "-font", TK_OPTION_FONT, - Tk_Offset(LabelElement,text.fontObj), DEFAULT_FONT }, - { "-foreground", TK_OPTION_COLOR, - Tk_Offset(LabelElement,text.foregroundObj), "black" }, - { "-underline", TK_OPTION_INT, - Tk_Offset(LabelElement,text.underlineObj), "-1"}, - { "-width", TK_OPTION_INT, - Tk_Offset(LabelElement,text.widthObj), ""}, - { "-anchor", TK_OPTION_ANCHOR, - Tk_Offset(LabelElement,text.anchorObj), "w"}, - { "-justify", TK_OPTION_JUSTIFY, - Tk_Offset(LabelElement,text.justifyObj), "left" }, - { "-wraplength", TK_OPTION_PIXELS, - Tk_Offset(LabelElement,text.wrapLengthObj), "0" }, - { "-embossed", TK_OPTION_INT, - Tk_Offset(LabelElement,text.embossedObj), "0"}, - - /* Image element part: - * NB: Keep in sync with ImageElementOptions. - */ - { "-image", TK_OPTION_STRING, - Tk_Offset(LabelElement,image.imageObj), "" }, - { "-stipple", TK_OPTION_STRING, /* Really: TK_OPTION_BITMAP */ - Tk_Offset(LabelElement,image.stippleObj), "gray50" }, - { "-background", TK_OPTION_COLOR, - Tk_Offset(LabelElement,image.backgroundObj), DEFAULT_BACKGROUND }, - { NULL, 0, 0, NULL } -}; - -/* - * LabelSetup -- - * Fills in computed fields of the label element. - * - * Calculate the text, image, and total width and height. - */ - -#undef MAX -#define MAX(a,b) ((a) > (b) ? a : b); -static void LabelSetup( - LabelElement *c, Tk_Window tkwin, Ttk_State state) -{ - Ttk_Compound *compoundPtr = &c->compound; - - Tk_GetPixelsFromObj(NULL,tkwin,c->spaceObj,&c->space); - Ttk_GetCompoundFromObj(NULL,c->compoundObj,(int*)compoundPtr); - - /* - * Deal with TTK_COMPOUND_NONE. - */ - if (c->compound == TTK_COMPOUND_NONE) { - if (ImageSetup(&c->image, tkwin, state)) { - c->compound = TTK_COMPOUND_IMAGE; - } else { - c->compound = TTK_COMPOUND_TEXT; - } - } else if (c->compound != TTK_COMPOUND_TEXT) { - if (!ImageSetup(&c->image, tkwin, state)) { - c->compound = TTK_COMPOUND_TEXT; - } - } - if (c->compound != TTK_COMPOUND_IMAGE) - TextSetup(&c->text, tkwin); - - /* - * ASSERT: - * if c->compound != IMAGE, then TextSetup() has been called - * if c->compound != TEXT, then ImageSetup() has returned successfully - * c->compound != COMPOUND_NONE. - */ - - switch (c->compound) - { - case TTK_COMPOUND_NONE: - /* Can't happen */ - break; - case TTK_COMPOUND_TEXT: - c->totalWidth = c->text.width; - c->totalHeight = c->text.height; - break; - case TTK_COMPOUND_IMAGE: - c->totalWidth = c->image.width; - c->totalHeight = c->image.height; - break; - case TTK_COMPOUND_CENTER: - c->totalWidth = MAX(c->image.width, c->text.width); - c->totalHeight = MAX(c->image.height, c->text.height); - break; - case TTK_COMPOUND_TOP: - case TTK_COMPOUND_BOTTOM: - c->totalWidth = MAX(c->image.width, c->text.width); - c->totalHeight = c->image.height + c->text.height + c->space; - break; - - case TTK_COMPOUND_LEFT: - case TTK_COMPOUND_RIGHT: - c->totalWidth = c->image.width + c->text.width + c->space; - c->totalHeight = MAX(c->image.height, c->text.height); - break; - } -} - -static void LabelCleanup(LabelElement *c) -{ - if (c->compound != TTK_COMPOUND_TEXT) - ImageCleanup(&c->image); - if (c->compound != TTK_COMPOUND_IMAGE) - TextCleanup(&c->text); -} - -static void LabelElementSize( - void *clientData, void *elementRecord, Tk_Window tkwin, - int *widthPtr, int *heightPtr, Ttk_Padding *paddingPtr) -{ - LabelElement *label = elementRecord; - int textReqWidth = 0; - - LabelSetup(label, tkwin, 0); - - *heightPtr = label->totalHeight; - - /* Requested width based on -width option, not actual text width: - */ - if (label->compound != TTK_COMPOUND_IMAGE) - textReqWidth = TextReqWidth(&label->text); - - switch (label->compound) - { - case TTK_COMPOUND_TEXT: - *widthPtr = textReqWidth; - break; - case TTK_COMPOUND_IMAGE: - *widthPtr = label->image.width; - break; - case TTK_COMPOUND_TOP: - case TTK_COMPOUND_BOTTOM: - case TTK_COMPOUND_CENTER: - *widthPtr = MAX(label->image.width, textReqWidth); - break; - case TTK_COMPOUND_LEFT: - case TTK_COMPOUND_RIGHT: - *widthPtr = label->image.width + textReqWidth + label->space; - break; - case TTK_COMPOUND_NONE: - break; /* Can't happen */ - } - - LabelCleanup(label); -} - -/* - * DrawCompound -- - * Helper routine for LabelElementDraw; - * Handles layout for -compound {left,right,top,bottom} - */ -static void DrawCompound( - LabelElement *l, Ttk_Box b, Tk_Window tkwin, Drawable d, Ttk_State state, - int imageSide, int textSide) -{ - Ttk_Box imageBox = - Ttk_PlaceBox(&b, l->image.width, l->image.height, imageSide, 0); - Ttk_Box textBox = - Ttk_PlaceBox(&b, l->text.width, l->text.height, textSide, 0); - ImageDraw(&l->image,tkwin,d,imageBox,state); - TextDraw(&l->text,tkwin,d,textBox); -} - -static void LabelElementDraw( - void *clientData, void *elementRecord, Tk_Window tkwin, - Drawable d, Ttk_Box b, Ttk_State state) -{ - LabelElement *l = elementRecord; - Tk_Anchor anchor = TK_ANCHOR_CENTER; - - LabelSetup(l, tkwin, state); - - /* - * Adjust overall parcel based on -anchor: - */ - Tk_GetAnchorFromObj(NULL, l->text.anchorObj, &anchor); - b = Ttk_AnchorBox(b, l->totalWidth, l->totalHeight, anchor); - - /* - * Draw text and/or image parts based on -compound: - */ - switch (l->compound) - { - case TTK_COMPOUND_NONE: - /* Can't happen */ - break; - case TTK_COMPOUND_TEXT: - TextDraw(&l->text,tkwin,d,b); - break; - case TTK_COMPOUND_IMAGE: - ImageDraw(&l->image,tkwin,d,b,state); - break; - case TTK_COMPOUND_CENTER: - { - Ttk_Box pb = Ttk_AnchorBox( - b, l->image.width, l->image.height, TK_ANCHOR_CENTER); - ImageDraw(&l->image, tkwin, d, pb, state); - pb = Ttk_AnchorBox( - b, l->text.width, l->text.height, TK_ANCHOR_CENTER); - TextDraw(&l->text, tkwin, d, pb); - break; - } - case TTK_COMPOUND_TOP: - DrawCompound(l, b, tkwin, d, state, TTK_SIDE_TOP, TTK_SIDE_BOTTOM); - break; - case TTK_COMPOUND_BOTTOM: - DrawCompound(l, b, tkwin, d, state, TTK_SIDE_BOTTOM, TTK_SIDE_TOP); - break; - case TTK_COMPOUND_LEFT: - DrawCompound(l, b, tkwin, d, state, TTK_SIDE_LEFT, TTK_SIDE_RIGHT); - break; - case TTK_COMPOUND_RIGHT: - DrawCompound(l, b, tkwin, d, state, TTK_SIDE_RIGHT, TTK_SIDE_LEFT); - break; - } - - LabelCleanup(l); -} - -static Ttk_ElementSpec LabelElementSpec = { - TK_STYLE_VERSION_2, - sizeof(LabelElement), - LabelElementOptions, - LabelElementSize, - LabelElementDraw -}; - -/*------------------------------------------------------------------------ - * +++ Initialization. - */ - -MODULE_SCOPE -void TtkLabel_Init(Tcl_Interp *interp) -{ - Ttk_Theme theme = Ttk_GetDefaultTheme(interp); - - Ttk_RegisterElement(interp, theme, "text", &TextElementSpec, NULL); - Ttk_RegisterElement(interp, theme, "image", &ImageElementSpec, NULL); - Ttk_RegisterElement(interp, theme, "label", &LabelElementSpec, NULL); -} - |