MacOS: finer control of the compilation conditions under which Core text and ATSU are used or not.
The compilation conditions depend on the targeted architecture, what version of the SDK is used, and what MacOS deployment version is used. Under most conditions, a single API is possible, and no pointer-to-member function is used. But the code supports building apps that can run both APIs depending on the version of the running MacOS. git-svn-id: file:///fltk/svn/fltk/branches/branch-1.3-porting@12025 ea41ed52-d2ee-0310-a9c1-e6b18d33e121
This commit is contained in:
Manolo Gouy
parent
2b5fbbacfc
commit
7a81273a0c
@ -30,7 +30,8 @@
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#include <ApplicationServices/ApplicationServices.h>
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// condition for the ATSU API to be available at compile time
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#define HAS_ATSU (!defined(__LP64__) || !__LP64__) && MAC_OS_X_VERSION_MAX_ALLOWED < MAC_OS_X_VERSION_10_11
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#define HAS_ATSU ((!defined(__LP64__) || !__LP64__) && MAC_OS_X_VERSION_MAX_ALLOWED < MAC_OS_X_VERSION_10_11 && \
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MAC_OS_X_VERSION_MIN_REQUIRED < MAC_OS_X_VERSION_10_5)
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struct Fl_Fontdesc;
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@ -152,33 +153,35 @@ protected:
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virtual const char *font_name(int num);
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virtual void font_name(int num, const char *name);
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Fl_Fontdesc* calc_fl_fonts(void);
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enum {use_CoreText = 1, use_ATSU};
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static int CoreText_or_ATSU;
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static void init_CoreText_or_ATSU();
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// Next group of functions have alternative CoreText- and ATSU-based implementations.
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virtual void text_extents(const char*, int n, int& dx, int& dy, int& w, int& h);
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virtual Fl_Font set_fonts(const char* xstarname);
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void set_fontname_in_fontdesc(Fl_Fontdesc *f);
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#if MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_5
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#if HAS_ATSU && MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_5
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enum {use_CoreText = 1, use_ATSU};
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static int CoreText_or_ATSU;
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static void init_CoreText_or_ATSU();
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void draw_CoreText(const char *str, int n, float x, float y);
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double width_CoreText(const UniChar* txt, int n);
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void text_extents_CoreText(const char*, int n, int& dx, int& dy, int& w, int& h);
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void descriptor_init_CoreText(const char* name, Fl_Fontsize Size, Fl_Font_Descriptor *d);
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void text_extents_CoreText(const char*, int n, int& dx, int& dy, int& w, int& h);
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Fl_Font set_fonts_CoreText(const char* xstarname);
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#endif
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#if HAS_ATSU
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void draw_ATSU(const char *str, int n, float x, float y);
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double width_ATSU(const UniChar* txt, int n);
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void text_extents_ATSU(const char*, int n, int& dx, int& dy, int& w, int& h);
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void descriptor_init_ATSU(const char* name, Fl_Fontsize Size, Fl_Font_Descriptor *d);
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void text_extents_ATSU(const char*, int n, int& dx, int& dy, int& w, int& h);
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Fl_Font set_fonts_ATSU(const char* xstarname);
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#endif
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// end of function group
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// define 2 kinds of pointers to member function
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typedef void (Fl_Quartz_Graphics_Driver::*pter_to_draw_member)(const char *str, int n, float x, float y);
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typedef double (Fl_Quartz_Graphics_Driver::*pter_to_width_member)(const UniChar *str, int n);
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static pter_to_draw_member CoreText_or_ATSU_draw;
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static pter_to_width_member CoreText_or_ATSU_width;
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#else
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void descriptor_init(const char* name, Fl_Fontsize Size, Fl_Font_Descriptor *d);
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#endif
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};
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class Fl_Quartz_Printer_Graphics_Driver : public Fl_Quartz_Graphics_Driver {
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@ -21,6 +21,7 @@
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#include "../Darwin/Fl_Darwin_System_Driver.H"
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#include <FL/x.H>
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#if HAS_ATSU && MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_5
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Fl_Quartz_Graphics_Driver::pter_to_draw_member Fl_Quartz_Graphics_Driver::CoreText_or_ATSU_draw;
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Fl_Quartz_Graphics_Driver::pter_to_width_member Fl_Quartz_Graphics_Driver::CoreText_or_ATSU_width;
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@ -28,7 +29,6 @@ int Fl_Quartz_Graphics_Driver::CoreText_or_ATSU = 0;
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void Fl_Quartz_Graphics_Driver::init_CoreText_or_ATSU()
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{
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#if HAS_ATSU && MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_5
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if (Fl_Darwin_System_Driver::calc_mac_os_version() < 100500) {
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// before Mac OS 10.5, only ATSU is available
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CoreText_or_ATSU = use_ATSU;
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@ -39,16 +39,8 @@ void Fl_Quartz_Graphics_Driver::init_CoreText_or_ATSU()
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CoreText_or_ATSU_draw = &Fl_Quartz_Graphics_Driver::draw_CoreText;
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CoreText_or_ATSU_width = &Fl_Quartz_Graphics_Driver::width_CoreText;
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}
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#elif MAC_OS_X_VERSION_MAX_ALLOWED < MAC_OS_X_VERSION_10_5
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CoreText_or_ATSU = use_ATSU;
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CoreText_or_ATSU_draw = &Fl_Quartz_Graphics_Driver::draw_ATSU;
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CoreText_or_ATSU_width = &Fl_Quartz_Graphics_Driver::width_ATSU;
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#else
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CoreText_or_ATSU = use_CoreText;
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CoreText_or_ATSU_draw = &Fl_Quartz_Graphics_Driver::draw_CoreText;
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CoreText_or_ATSU_width = &Fl_Quartz_Graphics_Driver::width_CoreText;
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#endif
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}
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#endif
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/*
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* By linking this module, the following static method will instantiate the
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@ -66,7 +58,9 @@ Fl_Quartz_Graphics_Driver::Fl_Quartz_Graphics_Driver() : Fl_Graphics_Driver(), g
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quartz_line_pattern = 0;
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quartz_line_pattern_size = 0;
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high_resolution_ = false;
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#if HAS_ATSU && MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_5
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if (!CoreText_or_ATSU) init_CoreText_or_ATSU();
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#endif
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}
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char Fl_Quartz_Graphics_Driver::can_do_alpha_blending() {
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@ -16,6 +16,62 @@
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// http://www.fltk.org/str.php
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//
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/* Implementation of support for two text drawing APIs: Core Text (current) and ATSU (legacy)
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The HAS_ATSU macro (defined in Fl_Quartz_Graphics_Driver.H) is true
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if and only if ATSU is available at compile time.
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The condition
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#if HAS_ATSU && MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_5
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is true if and only if both APIs are available at compile time.
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Depending on what MacOS SDK and what deployment target are used, the code can be
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compiled in 2 ways:
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1) both APIs are available at compile time and which one is used
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is determined at runtime,
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or
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2) only one API is available.
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When both APIs are compiled in, the choice of which one is used at runtime is done
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the first time the Fl_Quartz_Graphics_Driver constructor runs, and remains unchanged.
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Core Text is selected if the running Mac OS version is ≥ 10.5.
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The static function init_CoreText_or_ATSU() does this by setting the value
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of the class variable CoreText_or_ATSU to either use_CoreText or use_ATSU.
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If both APIs are available, several member functions come in groups of 3.
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For example, functions draw(), draw_CoreText() and draw_ATSU() are defined. The only
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task of draw() is to call either draw_CoreText() or draw_ATSU() depending on
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what API has been selected at program start.
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If the compilation condition authorizes a single API, one member function
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is defined instead of 3 in the other case. For example, a single draw() function
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is compiled, and contains the same code as what is called either draw_CoreText()
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or draw_ATSU() in the other case.
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The ADD_SUFFIX(name, suffix) macro is used so that each function has the
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short (e.g., draw) or long (e.g., draw_CoreText) name adequate for
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each compilation condition.
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The 2 most often used text functions are draw() and width(). Two pointers to member
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function are defined. Function init_CoreText_or_ATSU() assigns one with either
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draw_CoreText() or draw_ATSU(), and the other with either width_CoreText() or width_ATSU().
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The draw() and width() functions only have to dereference one pointer to member
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function to call the adequate code.
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If the compilation condition authorizes a single text API, only the code related
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to this API (say, CoreText) is compiled whereas all code related to the other API
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(thus, ATSU) is excluded from compilation. Furthermore, none of the code to
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choose API at runtime and to select which member function is called is compiled.
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Consequently, no pointer to member function is used.
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The condition for both APIs to be compiled-in is
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- target i386 or ppc architectures
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and
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- use SDK ≥ 10.5 and < 10.11
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and
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- set MacOS deployment target < 10.5 (through the -mmacosx-version-min= compilation option)
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*/
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#include "../../config_lib.h"
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#ifdef FL_CFG_GFX_QUARTZ
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@ -33,6 +89,12 @@ static CGAffineTransform font_mx = { 1, 0, 0, -1, 0, 0 };
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static int fl_free_font = FL_FREE_FONT;
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#if HAS_ATSU && MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_5
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# define ADD_SUFFIX(name, suffix) name##suffix
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#else
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# define ADD_SUFFIX(name, suffix) name
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#endif
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#if MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_5
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static CFMutableDictionaryRef attributes = NULL;
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@ -131,14 +193,14 @@ Fl_Font_Descriptor::Fl_Font_Descriptor(const char* name, Fl_Fontsize Size) {
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layout = NULL;
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#endif
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Fl_Quartz_Graphics_Driver *driver = (Fl_Quartz_Graphics_Driver*)&Fl_Graphics_Driver::default_driver();
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#if HAS_ATSU
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#if HAS_ATSU && MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_5
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if (Fl_Quartz_Graphics_Driver::CoreText_or_ATSU == Fl_Quartz_Graphics_Driver::use_ATSU) {
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driver->descriptor_init_ATSU(name, size, this);
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return;
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}
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#endif
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#if MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_5
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driver->descriptor_init_CoreText(name, size, this);
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#else
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driver->descriptor_init(name, size, this);
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#endif
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}
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@ -233,14 +295,6 @@ int Fl_Quartz_Graphics_Driver::descent() {
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return fl_fontsize->descent + 1;
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}
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void Fl_Quartz_Graphics_Driver::draw(const char *str, int n, float x, float y) {
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(this->*CoreText_or_ATSU_draw)(str, n, x, y);
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}
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double Fl_Quartz_Graphics_Driver::width(const UniChar* txt, int n) {
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return (this->*CoreText_or_ATSU_width)(txt, n);
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}
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void Fl_Quartz_Graphics_Driver::draw(const char* str, int n, int x, int y) {
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draw(str, n, (float)x, y+0.5f);
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}
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@ -278,14 +332,8 @@ double Fl_Quartz_Graphics_Driver::width(unsigned int wc) {
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}
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void Fl_Quartz_Graphics_Driver::set_fontname_in_fontdesc(Fl_Fontdesc *f) {
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#if HAS_ATSU
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if (CoreText_or_ATSU == use_ATSU) {
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strlcpy(f->fontname, f->name, ENDOFBUFFER);
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return;
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}
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#endif
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#if MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_5
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static void set_fontname_CoreText(Fl_Fontdesc *f) {
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CFStringRef cfname = CFStringCreateWithCString(NULL, f->name, kCFStringEncodingUTF8);
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CTFontRef ctfont = CTFontCreateWithName(cfname, 0, NULL);
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CFRelease(cfname);
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@ -293,6 +341,19 @@ void Fl_Quartz_Graphics_Driver::set_fontname_in_fontdesc(Fl_Fontdesc *f) {
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CFRelease(ctfont);
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CFStringGetCString(cfname, f->fontname, ENDOFBUFFER, kCFStringEncodingUTF8);
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CFRelease(cfname);
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}
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#endif
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void Fl_Quartz_Graphics_Driver::set_fontname_in_fontdesc(Fl_Fontdesc *f) {
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#if HAS_ATSU && MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_5
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if (CoreText_or_ATSU == use_ATSU)
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strlcpy(f->fontname, f->name, ENDOFBUFFER);
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else
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set_fontname_CoreText(f);
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#elif HAS_ATSU
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strlcpy(f->fontname, f->name, ENDOFBUFFER);
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#else
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set_fontname_CoreText(f);
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#endif
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}
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@ -323,44 +384,51 @@ void Fl_Quartz_Graphics_Driver::font_name(int num, const char *name) {
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Fl_Fontdesc* Fl_Quartz_Graphics_Driver::calc_fl_fonts(void)
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{
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#if HAS_ATSU
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#if HAS_ATSU && MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_5
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if (CoreText_or_ATSU == use_ATSU) return built_in_table_full;
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#endif
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#if MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_5
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return built_in_table_PS;
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#elif HAS_ATSU
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return built_in_table_full;
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#else
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return built_in_table_PS;
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#endif
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}
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Fl_Font Fl_Quartz_Graphics_Driver::set_fonts(const char* xstarname)
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{
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#if HAS_ATSU
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if (CoreText_or_ATSU == use_ATSU) return set_fonts_ATSU(xstarname);
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#endif
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#if MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_5
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return set_fonts_CoreText(xstarname);
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#endif
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#if HAS_ATSU && MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_5
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void Fl_Quartz_Graphics_Driver::draw(const char *str, int n, float x, float y) {
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(this->*CoreText_or_ATSU_draw)(str, n, x, y);
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}
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double Fl_Quartz_Graphics_Driver::width(const UniChar* txt, int n) {
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return (this->*CoreText_or_ATSU_width)(txt, n);
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}
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Fl_Font Fl_Quartz_Graphics_Driver::set_fonts(const char* xstarname)
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{
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if (CoreText_or_ATSU == use_ATSU) return set_fonts_ATSU(xstarname);
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return set_fonts_CoreText(xstarname);
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}
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void Fl_Quartz_Graphics_Driver::text_extents(const char* txt, int n, int& dx, int& dy, int& w, int& h)
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{
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#if HAS_ATSU
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if (CoreText_or_ATSU == use_ATSU) {
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text_extents_ATSU(txt, n, dx, dy, w, h);
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return;
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}
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#endif
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#if MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_5
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text_extents_CoreText(txt, n, dx, dy, w, h);
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#endif
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}
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#endif
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#if MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_5
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/// CoreText-based code
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#if MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_5
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void Fl_Quartz_Graphics_Driver::descriptor_init_CoreText(const char* name, Fl_Fontsize size, Fl_Font_Descriptor *d) {
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void Fl_Quartz_Graphics_Driver::ADD_SUFFIX(descriptor_init, _CoreText)(const char* name,
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Fl_Fontsize size, Fl_Font_Descriptor *d)
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{
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CFStringRef str = CFStringCreateWithCString(NULL, name, kCFStringEncodingUTF8);
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d->fontref = CTFontCreateWithName(str, size, NULL);
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CGGlyph glyph[2];
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@ -441,7 +509,8 @@ static CGFloat variation_selector_width(CFStringRef str16, Fl_Font_Descriptor *f
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return retval;
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}
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double Fl_Quartz_Graphics_Driver::width_CoreText(const UniChar* txt, int n) {
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double Fl_Quartz_Graphics_Driver::ADD_SUFFIX(width, _CoreText)(const UniChar* txt, int n)
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{
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double retval = 0;
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UniChar uni;
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int i;
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@ -511,7 +580,8 @@ double Fl_Quartz_Graphics_Driver::width_CoreText(const UniChar* txt, int n) {
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// text extent calculation
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void Fl_Quartz_Graphics_Driver::text_extents_CoreText(const char *str8, int n, int &dx, int &dy, int &w, int &h) {
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void Fl_Quartz_Graphics_Driver::ADD_SUFFIX(text_extents, _CoreText)(const char *str8, int n,
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int &dx, int &dy, int &w, int &h) {
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Fl_Font_Descriptor *fl_fontsize = valid_font_descriptor();
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UniChar *txt = mac_Utf8_to_Utf16(str8, n, &n);
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CFStringRef str16 = CFStringCreateWithCharactersNoCopy(NULL, txt, n, kCFAllocatorNull);
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@ -544,7 +614,8 @@ static CGColorRef flcolortocgcolor(Fl_Color i)
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return CGColorCreate(cspace, components);
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}
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void Fl_Quartz_Graphics_Driver::draw_CoreText(const char *str, int n, float x, float y) {
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void Fl_Quartz_Graphics_Driver::ADD_SUFFIX(draw, _CoreText)(const char *str, int n, float x, float y)
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{
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Fl_Font_Descriptor *fl_fontsize = valid_font_descriptor();
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// convert to UTF-16 first
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UniChar *uniStr = mac_Utf8_to_Utf16(str, n, &n);
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@ -601,7 +672,8 @@ static int name_compare(const void *a, const void *b)
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}
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}
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Fl_Font Fl_Quartz_Graphics_Driver::set_fonts_CoreText(const char* xstarname) {
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Fl_Font Fl_Quartz_Graphics_Driver::ADD_SUFFIX(set_fonts, _CoreText)(const char* xstarname)
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{
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#pragma unused ( xstarname )
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if (fl_free_font > FL_FREE_FONT) return (Fl_Font)fl_free_font; // if already called
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@ -639,10 +711,13 @@ Fl_Font Fl_Quartz_Graphics_Driver::set_fonts_CoreText(const char* xstarname) {
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#endif // >= 10.5
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#if HAS_ATSU
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/// ATSU-based code to support Mac OS < 10.5
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void Fl_Quartz_Graphics_Driver::descriptor_init_ATSU(const char* name, Fl_Fontsize size, Fl_Font_Descriptor *d) {
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/// ATSU-based code to support Mac OS < 10.5
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#if HAS_ATSU
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void Fl_Quartz_Graphics_Driver::ADD_SUFFIX(descriptor_init, _ATSU)(const char* name,
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||||
Fl_Fontsize size, Fl_Font_Descriptor *d)
|
||||
{
|
||||
OSStatus err;
|
||||
// fill our structure with a few default values
|
||||
d->ascent = size*3/4.;
|
||||
@ -695,7 +770,8 @@ void Fl_Quartz_Graphics_Driver::descriptor_init_ATSU(const char* name, Fl_Fontsi
|
||||
ATSUSetTransientFontMatching (d->layout, true);
|
||||
}
|
||||
|
||||
void Fl_Quartz_Graphics_Driver::draw_ATSU(const char *str, int n, float x, float y) {
|
||||
void Fl_Quartz_Graphics_Driver::ADD_SUFFIX(draw, _ATSU)(const char *str, int n, float x, float y)
|
||||
{
|
||||
Fl_Font_Descriptor *fl_fontsize = valid_font_descriptor();
|
||||
// convert to UTF-16 first
|
||||
UniChar *uniStr = mac_Utf8_to_Utf16(str, n, &n);
|
||||
@ -715,7 +791,7 @@ void Fl_Quartz_Graphics_Driver::draw_ATSU(const char *str, int n, float x, float
|
||||
CGContextSetShouldAntialias(gc, false);
|
||||
}
|
||||
|
||||
double Fl_Quartz_Graphics_Driver::width_ATSU(const UniChar* txt, int n) {
|
||||
double Fl_Quartz_Graphics_Driver::ADD_SUFFIX(width, _ATSU)(const UniChar* txt, int n) {
|
||||
OSStatus err;
|
||||
Fixed bBefore, bAfter, bAscent, bDescent;
|
||||
ATSUTextLayout layout;
|
||||
@ -741,7 +817,9 @@ double Fl_Quartz_Graphics_Driver::width_ATSU(const UniChar* txt, int n) {
|
||||
return len;
|
||||
}
|
||||
|
||||
void Fl_Quartz_Graphics_Driver::text_extents_ATSU(const char *str8, int n, int &dx, int &dy, int &w, int &h) {
|
||||
void Fl_Quartz_Graphics_Driver::ADD_SUFFIX(text_extents, _ATSU)(const char *str8, int n,
|
||||
int &dx, int &dy, int &w, int &h)
|
||||
{
|
||||
Fl_Font_Descriptor *fl_fontsize = valid_font_descriptor();
|
||||
UniChar *txt = mac_Utf8_to_Utf16(str8, n, &n);
|
||||
OSStatus err;
|
||||
@ -770,7 +848,8 @@ void Fl_Quartz_Graphics_Driver::text_extents_ATSU(const char *str8, int n, int &
|
||||
//printf("r: %d l: %d t: %d b: %d w: %d h: %d\n", bbox.right, bbox.left, bbox.top, bbox.bottom, w, h);
|
||||
}
|
||||
|
||||
Fl_Font Fl_Quartz_Graphics_Driver::set_fonts_ATSU(const char* xstarname) {
|
||||
Fl_Font Fl_Quartz_Graphics_Driver::ADD_SUFFIX(set_fonts, _ATSU)(const char* xstarname)
|
||||
{
|
||||
#pragma unused ( xstarname )
|
||||
if (fl_free_font > FL_FREE_FONT) return (Fl_Font)fl_free_font; // if already called
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user