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author | Björn Gustavsson <[email protected]> | 2016-06-27 11:48:03 +0200 |
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committer | Björn Gustavsson <[email protected]> | 2016-06-27 11:49:57 +0200 |
commit | 6931dce17580d097351dd7be09ce7c9ed3f72827 (patch) | |
tree | 2456845e95ed0112c2f08ed8ab6e867686b91d7a /lib/gs/src/gstk_font.erl | |
parent | dfccd57cb2b69fc3ab01acd0ccbfc894a8403358 (diff) | |
download | otp-6931dce17580d097351dd7be09ce7c9ed3f72827.tar.gz otp-6931dce17580d097351dd7be09ce7c9ed3f72827.tar.bz2 otp-6931dce17580d097351dd7be09ce7c9ed3f72827.zip |
Remove the gs application
The gs application ws deprecated in R15B01.
Diffstat (limited to 'lib/gs/src/gstk_font.erl')
-rw-r--r-- | lib/gs/src/gstk_font.erl | 255 |
1 files changed, 0 insertions, 255 deletions
diff --git a/lib/gs/src/gstk_font.erl b/lib/gs/src/gstk_font.erl deleted file mode 100644 index 80cc46d493..0000000000 --- a/lib/gs/src/gstk_font.erl +++ /dev/null @@ -1,255 +0,0 @@ -%% -%% %CopyrightBegin% -%% -%% Copyright Ericsson AB 1996-2016. All Rights Reserved. -%% -%% Licensed under the Apache License, Version 2.0 (the "License"); -%% you may not use this file except in compliance with the License. -%% You may obtain a copy of the License at -%% -%% http://www.apache.org/licenses/LICENSE-2.0 -%% -%% Unless required by applicable law or agreed to in writing, software -%% distributed under the License is distributed on an "AS IS" BASIS, -%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -%% See the License for the specific language governing permissions and -%% limitations under the License. -%% -%% %CopyrightEnd% -%% - -%% -%%% Purpose : The font model - -%% ########################################################################### -%% -%% This module handle fonts. It was changed for Tcl 8.2 but it could -%% probably be simplified more. -%% -%% In Tcl 8.2 we can use named fonts. So the whe get a font request we -%% first check if it already exists and if not we name it and insert it -%% into the database. -%% -%% The font naming is also changedin Tcl 8.2. -%% -%% In Tcl 8.2 there is a way to find out the width of a string in -%% a specified font. -%% -%% ########################################################################### - --module(gstk_font). - -%-compile(export_all). - --export([init/0,choose_ascii/2,choose/2,width_height/3]). - - --ifndef(NEW_WIDTH_HEIGHT). -init() -> - %% hack. the only way to find the size of a text seems to be to put - %% it into a label in an unmappen window (DummyFontWindow) - gstk:exec("toplevel .dfw;wm withdraw .dfw;" %deiconify - "label .dfw.l -text dummyinittxt -padx 0 -pady 0 -borderwidth 0;" - "pack .dfw.l"). --else. -init() -> true. --endif. - -%%---------------------------------------------------------------------- -%% Returns: undefined if font doesn't exist -%% {WidthPixels, HeightPixels} -%%---------------------------------------------------------------------- --ifndef(NEW_WIDTH_HEIGHT). -width_height(_DB, FontSpec, Txt) -> - FontSpecStr = tk_font_spec(norm_font_spec(FontSpec)), - case gstk:call([".dfw.l co -font {", FontSpecStr,"}", - " -text ", gstk:to_ascii(Txt)]) of - {result, _} -> - Width = tcl2erl:ret_int("update idletasks;winfo w .dfw.l"), - Height = tcl2erl:ret_int("winfo h .dfw.l"), -% io:format("width_height(~p,~p) =>\n~p\n\n",[FontSpec,Txt,{Width,Height}]), - {Width,Height}; - _Bad_Result -> -% io:format("width_height(~p,~p) =>\nundefined\n\n",[FontSpec,Txt]), - undefined - end. --else. -%% This code should work but does't. Tk gives incorrect -%% values if asking to fast or something /kent -width_height(DB, FontSpec, Txt) when tuple(FontSpec) -> - NormFontSpec = norm_font_spec(FontSpec), - FontSpecStr = tk_font_spec(NormFontSpec), - {Family,_,Size} = NormFontSpec, - LineHeight = - case cached_line_height(DB, {Family,Size}) of - undefined -> - LineH = tcl2erl:ret_int( - ["font metrics {",FontSpecStr,"} -linespace"]), - cache_line_height(DB, {Family,Size}, LineH), - LineH; - LineH -> - LineH - end, - EscapedText = gstk:to_ascii(Txt), - Width = tcl2erl:ret_int( - ["font measure {",FontSpecStr,"} ",EscapedText]), - Height = LineHeight * line_count(Txt), - {Width,Height}; - -width_height(_DB, FontSpec, Txt) when list(FontSpec) -> - EscapedText = gstk:to_ascii(Txt), - Width = - tcl2erl:ret_int(["font measure {",FontSpec,"} ",EscapedText]), - LineHeight = - tcl2erl:ret_int(["font metrics {",FontSpec,"} -linespace"]), - Height = LineHeight * line_count(Txt), - {Width,Height}. - -cached_line_height(DB,FontSpec) -> - gstk_db:lookup(DB, {cached_line_height,FontSpec}). - -cache_line_height(DB,FontSpec,Size) -> - gstk_db:insert(DB, {cached_line_height,FontSpec}, Size). - -line_count(Line) -> - line_count(Line, 1). - -line_count([H | T], Count) -> - Count + line_count(H, 0) + line_count(T, 0); -line_count($\n, Count) -> Count + 1; -line_count(Char, Count) when integer(Char) -> Count; -line_count([], Count) -> Count. --endif. - -% "expr [font metrics ",FSpec," -linespace] * \ -% [regsub -all \\n ",Txt," {} ignore]" - -%%---------------------------------------------------------------------- -%% Returns: Font specification string in Tk format -%% -%% The input is {Family,Size} or {Family,Style,Size} where Family and -%% Style are atoms ?! FIXME true??? -%%---------------------------------------------------------------------- -choose_ascii(DB, Font) -> - {Fam,Styl,Siz} = choose(DB, Font), - {variable,V} =gstk_db:lookup(DB,{font,Fam,Styl,Siz}), -% io:format("choose_ascii(~p) =>\n~p\n\n",[Font,V]), - V. - -%% DB contains: {font,Fam,Style,Size} -> {replaced_by,{font,Fam,Style,Size}} or -%% {variable, TkVariableStrInclDollar} - -%% ########################################################################### -%% -%% We create a new font name on the other side and store the name in the -%% database. We reorder the options so that they have a predefined order. -%% -%% ########################################################################### - -choose(DB, FontSpec) -> - choose_font(DB, norm_font_spec(FontSpec)). - -choose_font(DB, {Fam,Styl,Siz}) -> - Fam0 = map_family(Fam), - case gstk_db:lookup(DB,{font,Fam0,Styl,Siz}) of - {variable,_OwnFontName} -> true; - undefined -> - N = gstk_db:counter(DB,font), % FIXME: Can use "font create" - % without name to get unique name - NewName=["f",gstk:to_ascii(N)], -% io:format("~s\n\n", -% [lists:flatten(["font create ",NewName," ", -% tk_font_spec({Fam0,Styl,Siz})])]), - gstk:exec(["font create ",NewName," ", - tk_font_spec({Fam0,Styl,Siz})]), - %% should us variable syntax gs(f1) instead - %% have to recompile erlcall to define this global gs var - V2 = {variable,NewName}, - gstk_db:insert(DB,{font,Fam0,Styl,Siz},V2), - true - end, -% io:format("choose(~p,~p,~p) =>\n~p\n\n",[Fam,Styl,Siz,{Fam0,Styl,Siz}]), - {Fam0,Styl,Siz}. - - -%% ----- The Font Model ----- - -%% Guaranteed system fonts to exists in Tk 8.2 are: -%% -%% Windows : system systemfixed ansi ansifixed device oemfixed -%% Unix : fixed -%% -%% Times, Courier and Helvetica always exists. Tk try to substitute -%% others with the best matchin font. - -%% We map GS font style and names to something we know Tk 8 have. -%% We know Tk have 'times', 'courier', 'helvetica' and 'fixed'. -%% -%% GS style specification is 'bold' or 'italic'. -%% GS family is a typeface of type 'times', 'courier', 'helvetica', -%% 'symbol', 'new_century_schoolbook', or 'screen' (which is a suitable -%% screen font). -%% -%% Note that 'symbol' may not be present and this is not handled. -%% -%% The X/Tk8 font handling don't work very well. The fonts are -%% scaled "tk scaling", we can display a 9 and 10 point helvetica -%% but "font actual {helvetica 9}" will return 10 points.... - -map_family(new_century_schoolbook) -> - times; -map_family(Fam) -> - Fam. - -% Normalize so can make the coding easier and compare font -% specifications stored in database with new ones. We ignore invalid -% entries in the list. - -norm_font_spec({Family,Size}) -> - {Family,[],Size}; -norm_font_spec({Family,Style,Size}) -> - {Family,norm_style(Style),Size}. - -norm_style(bold) -> - [bold]; -norm_style(italic) -> - [italic]; -norm_style([italic]) -> - [italic]; -norm_style([bold]) -> - [bold]; -norm_style([bold,italic] = Style) -> - Style; -norm_style([italic,bold]) -> - [bold,italic]; -norm_style(List) when is_list(List) -> % not well formed list, ignore garbage - case {lists:member(bold, List),lists:member(italic, List)} of - {true,true} -> - [bold,italic]; - {true,_} -> - [bold]; - {_,true} -> - [italic]; - _ -> - [] % ignore garbage - end; -norm_style(_Any) -> % ignore garbage - []. - - -% Create a tcl string from a normalized font specification -% The style list is normalized. - -tk_font_spec({Fam,Style,Size}) -> - ["-family ",gstk:to_ascii(Fam), - " -size ",gstk:to_ascii(-Size), - tk_font_spec_style(Style)]. - -tk_font_spec_style([]) -> - ""; -tk_font_spec_style([bold]) -> - " -weight bold"; -tk_font_spec_style([italic]) -> - " -slant italic"; -tk_font_spec_style([bold,italic]) -> - " -weight bold -slant italic". |