Update FLTK to latest release (Windows builds); update CI

.github/workflows/cmake.yml

@@ -76,13 +76,13 @@ jobs:
             obsidian.exe
           retention-days: ${{env.RETENTION_DAYS}}
   build-linux:
-      runs-on: ubuntu-latest
+      runs-on: ubuntu-24.04
       steps:
       - uses: actions/checkout@v4
       - name: Install dependencies
         run: |
           sudo apt-get update
-          sudo apt-get install -y libxft-dev libfontconfig1-dev libgl-dev
+          sudo apt-get install -y libxft-dev libfontconfig1-dev libgl-dev libfltk1.3-dev
       - name: Configure CMake Ubuntu
         run: mkdir build && cd build && cmake .. -DCMAKE_BUILD_TYPE=${{env.BUILD_TYPE}}
       - name: Build Ubuntu
@@ -108,6 +108,8 @@ jobs:
     runs-on: macos-latest
     steps:
     - uses: actions/checkout@v4
+    - name: Install HomeBrew FLTK
+      run: brew install fltk
     - name: Configure CMake MacOS
       run: mkdir build && cd build && cmake .. -DCMAKE_BUILD_TYPE=${{env.BUILD_TYPE}}
     - name: Build MacOS

libraries/fltk/ANNOUNCEMENT

@@ -1,15 +1,49 @@
-FLTK 1.4 is based on the final release of FLTK 1.3.4.
+FLTK 1.4 is based on the final release of FLTK 1.3.4. Later updates
+have been backported to 1.3.5 - 1.3.10.
 
-Technically the branch was forked earlier, but all changes in FLTK 1.3.4
-have also been (modified and) committed in branch-1.3-porting, which is
-the base of branch-1.4.
-
-FLTK 1.4 is intended to be mostly API compatible with FLTK 1.3.4 so
+FLTK 1.4 is intended to be mostly API compatible with FLTK 1.3.x so
 you don't need to change source code when you switch to FLTK 1.4.
+However, all programs must be recompiled with FLTK 1.4 because the
+ABI (Application Binary Interface) has changed.
+
+Potential source code conflicts are documented in chapter "Migrating
+Code from FLTK 1.3 to 1.4" of the user documentation [1].
+
+FLTK 1.4 adds some new widgets (e.g. Fl_Flex, Fl_Grid) for flexible GUI
+layout, Fl_Scheme_Choice for scheme selection by users, and more.
+Other widgets (Fl_Tabs, Fl_Tile, Fl_Spinner etc.) have been improved
+for better user experience.
+
+FLTK 1.4 supports HighDPI displays under Linux/Unix and Windows and
+improves HighDPI support on macOS. The initial screen scaling factor is
+read from the system and application windows can be zoomed (in/out/reset)
+by the user with ctrl/+/-/0 shortcuts, respectively.
+
+CMake support has been improved significantly and requires CMake 3.15 or
+higher, autotools/configure/make is still supported. The latter will be
+dropped in the next minor release (1.5.0).
+
+macOS is supported up to 15.0 "Sequoia".
+
+The platform dependent code in FLTK 1.4 was rewritten to enable easier
+porting to new platforms. Basically all platform dependent code has
+been isolated and implemented in virtual methods of "driver" classes.
+For details see 'src/drivers' and subdirectories.
+
+FLTK is now compatible with the Wayland platform on current Linux
+distributions and FreeBSD. The default build of the library on these
+platforms supports both X11 and Wayland in a "hybrid" library. Programs
+compiled and linked to this library start using Wayland if it is
+available at runtime and fall back to using X11 if not. Programs using
+X11 specific code that are not yet ported to Wayland can still be used
+on pure X11 systems or by disabling the Wayland support on startup so
+they fall back to using X11 only. This requires 'XWayland' support on
+Wayland enabled (Linux) systems.
 
-However, the platform dependent code in FLTK 1.4 was rewritten to enable
-better porting to new platforms. Basically all platform dependent code
-has been isolated and implemented in virtual methods of "driver" classes.
-See src/drivers and subdirectories.
+The current development branch on GitHub [2] is `master`. This will be
+changed to `branch-1.4` when development of FLTK 1.5.0 begins and 1.4
+will be switched to maintenance mode.
 
-More to come ...
+[1] https://www.fltk.org/doc-1.4/ (HTML) and
+    https://www.fltk.org/doc-1.4/fltk.pdf (PDF)
+[2] https://github.com/fltk/fltk.git

libraries/fltk/CHANGES_1.3.txt

@@ -1,3 +1,187 @@
+CHANGES IN FLTK 1.3.9                                   RELEASED: Dec 09 2023
+
+FLTK 1.3.9 is a maintenance release with some fixes and enhancements.
+
+Highlights in this release:
+
+  - Support macOS up to macOS 14 "Sonoma".
+  - Update bundled libraries to current versions (see below).
+  - Introduce bundled image library "prefixing" to avoid conflicts
+    with system libraries.
+  - New CMake option FLTK_MSVC_RUNTIME_DLL to select Visual Studio
+    Runtime version: DLL (/MDx) or static (/MTx), see README.CMake.txt
+
+
+Bundled library versions (see also README.bundled-libs.txt):
+
+    Library       Version            Release date
+    ---------------------------------------------
+    jpeg          jpeg-9e            2022-01-16
+    png           libpng-1.6.40      2023-06-21
+    zlib          zlib-1.3           2023-08-18
+
+
+Details:
+
+  Albrecht Schlosser:
+    Backport X11 INCR protocol fixes from 1.4.0 (issue #451)
+    X11: Suppress compiler warnings when using gcc or clang
+    Fix crash if a program exits before it opens a window (STR 3484).
+    Fix compilation error with current Visual Studio 2022
+    Windows: #define WIN32 if not defined by user
+    Backport warning fixes from 1.4.0 in src/fl_draw.cxx (#693)
+    Fix compiler warning as pointed out in PR #693
+    Fix another compiler warning (#693)
+    Remove unused variable, fix "type issue" (#445, part 2)
+    Fix stack buffer overflow found by address sanitizer
+    Fix "gtk+ rendering" (GitHub Issue #443)
+    Fix doxygen warnings
+    Bump version numbers, prepare release 1.3.9
+    Fix several compiler warnings
+    Update bundled image libraries and zlib to current versions
+    Update README, README.CMake.txt, and some support files
+    Fix compiler warnings: backported from 1.4 (git 'master')
+    CMake/MSVC: remove confusing recommendation to rerun CMake
+    Documentation: remove dark color on title page
+    Raise CMake minimum required version to 3.15 and more
+
+  ManoloFLTK:
+    macOS platform: Issue #325 "Disabling IM disables Greek and Cyrillic layouts"
+    Fix fullscreen window level corner cases on macOS
+    Fix issue #373 apparent with macOS platform and SDK ≤ 10.13
+    Issue #452: Fl::get_font_name failure on OS-X.
+    Issue #454: crash in Fl::get_font_name().
+    Issue #469: Fl_Sys_Menu_Bar menu item shortcuts using Esc or Tab don't work on Mac
+    Fix "Focus is lost leaving full screen on macOS 13" (#608)
+    Add support of macOS Ventura 13.0 and macOS Sonoma 14.0
+    macOS: remove configure option --enable-x11 and CMake OPTION_APPLE_X11;
+      this functionality remains in FLTK 1.4.
+    configure.ac: make sure local-png and local-zlib always run together
+    Remove the -mwindows argument from CFLAGS and CXXFLAGS
+
+Matthias Melcher:
+    Issue #188: Fix reference counts and search for Fl_Shared_Image original
+
+  YX:
+    Fix IME problem (issue #270)
+
+
+CHANGES IN FLTK 1.3.8                                   RELEASED: Nov 20 2021
+
+FLTK 1.3.8 is a maintenance release with some fixes and enhancements.
+
+Details:
+
+  Albrecht Schlosser:
+    Make "FLTK_CONSOLIDATE_MOTION" user-definable (issue #76)
+    Fix compiler warnings (backported from 1.4)
+    Add new dialog fl_choice_n() with extended return values (#282)
+
+  ManoloFLTK:
+    Account for deprecation of [NSBitmapImageRep initWithFocusedViewRect:]
+      in macOS 10.14
+    macOS: fix fullscreen window when other windows were created before
+    Fix issue #287: "FLTK 1.3.6 doesn't handle fullscreen on macOS"
+    Fix issue #288: "FLTK 1.3.6+ doesn't notify window movement on macOS"
+    Fix issue #279: "HiDpi issue on macOS with retina display"
+    macOS: Allow building with non-Apple compiler that may not support blocks
+
+
+CHANGES IN FLTK 1.3.7                                   RELEASED: Jul 25 2021
+
+FLTK 1.3.7 is a maintenance release for macOS only. It fixes one
+regression introduced in FLTK 1.3.6 and two long standing timer
+issues on macOS.
+
+Other platforms than macOS are not concerned.
+
+Changes:
+
+  Avoid premature FL_RELEASE event at start of drag-n-drop operation
+  Fix a timer inconsistency and prevent a crash
+  Fl::add_timeout() must always create a new timer (#248)
+
+
+
+CHANGES IN FLTK 1.3.6                                   RELEASED: May 15 2021
+
+There have been no changes since FLTK 1.3.6rc2.
+
+
+CHANGES IN FLTK 1.3.6rc2                                RELEASED: May 04 2021
+
+FLTK 1.3.6rc2 fixes some minor issues of 1.3.6rc1, particularly macOS
+bundle generation. It addresses an issue that bundles can't be executed
+on macOS 11.3 Big Sur if built with configure/make after downloading
+the release tarball because of the macOS "quarantine" feature.
+
+Details:
+
+  Albrecht Schlosser:
+    Rename file 'VERSION' to 'fltk_version.dat' (#191)
+    Fix version number in doxygen docs
+    Fix build with Cairo for CMake < 3.13
+    CMake: fix old (pre 3.13) link_directories() usage
+    Enhance CMake build configuration summary
+    Refactor macOS bundle generation to avoid "quarantine"
+    Fix a new compiler warning
+
+
+CHANGES IN FLTK 1.3.6rc1                                RELEASED: Apr 26 2021
+
+FLTK 1.3.6 is a maintenance release with new macOS Big Sur support
+and some bug fixes. macOS Big Sur is supported on both Intel and the
+new Apple Silicon (M1) chips.
+
+CMake support has been improved but is not yet "perfect". Documentation
+has been enhanced, bundled image libraries have been updated to current
+versions.
+
+The following lists are subsets of all commits. References in '(...)'
+are either STR numbers (STR xxxx) or GitHub Issues or Pull Requests
+(#nnn).
+
+
+Bug fixes and other improvements
+
+  Albrecht Schlosser:
+    Fix Fl::add_timeout() in draw() under Linux (STR 3188)
+    X11: Fix X Input Methods (XIM) (STR 3502, 3192)
+    Fix overly restrictive JPEG filter (#81)
+    Fix DND in read-only Fl_Input (Fl_Output) (#113)
+    Fix offscreen drawing under X11 (STR 3384)
+    Fix potential fluid crashes (STR 3420) + memory leak
+    Fix X11 copy-paste and drag-and-drop target selection (#182)
+    Fix CMake install procedure (#212)
+    Avoid "Bogus FL_MOVE/FL_DRAG events" (#76)
+    CMake: Document FLTKConfig.cmake and set FLTK_INCLUDE_DIR
+
+  Greg Ercolano:
+    Fix issue92, added -d debug flag to fluid (#92)
+    Merge pull request #176 from ComputerNerd/errmsg-fix-13
+
+  ManoloFLTK:
+    X11: add support for copy+paste of image within one app
+    Windows: add bitmap version of graphics when copying to clipboard
+    Fix use of Xrender extension with old, 16-bit framebuffers.
+    Fix for Fl_Native_File_Chooser under macOS 10.15 Catalina and ...
+    Restore macOS capacity to turn window fullscreen encompassing several screens.
+    Improve Fl_Copy_Surface under macOS
+    Set OPTION_USE_SYSTEM_LIBPNG/JPEG off under macOS by default
+    Have Fl_Pack::draw() call Fl_Group::init_sizes() on its parent group.
+    CMake support of the Darwin+XQuartz test platform
+    Add support of macOS "Big Sur" 11.0
+    Fix when building with SDK 10.15 and running with 11.0 Big Sur
+    Backport fix for issue #185 "Shared Image reload() loses initial dimensions" from branch 1.4
+    Fix fl_endpoints() for macOS platform that was not effective.
+    Fix stack corruption when loading GIF (pull request #200)
+    Restore ./configure --enable-x11 on macOS
+    Fix crash when terminating any macOS app by cmd-Q
+
+  OKAMURA, Yasunobu:
+    Fix JIS Keyboard dead keys
+
+
 CHANGES IN FLTK 1.3.5                            RELEASED: Mar 03 2019
 
   Bug fixes and other improvements

libraries/fltk/CMake/macOSMaxAllowed.c

@@ -0,0 +1,6 @@
+
+#include <AvailabilityMacros.h>
+#if __MAC_OS_X_VERSION_MAX_ALLOWED < SDK_VERSION_CHECK
+#error __MAC_OS_X_VERSION_MAX_ALLOWED < SDK_VERSION_CHECK
+#endif
+int main(int argc, char** argv) { return 0; }

libraries/fltk/CMake/options.cmake

@@ -85,16 +85,23 @@ set(FL_ABI_VERSION ${FLTK_ABI_VERSION})
 #  Note: this might be handled better by the 'MSVC_RUNTIME_LIBRARY'
 #  target property for each target rather than setting a global
 #  CMake variable - but this version does the latter.
+#  This also applies when using LLVM/clang on Windows (#1058).
 #######################################################################
 
-if(MSVC)
+if(WIN32 AND NOT MINGW AND NOT MSYS)
   option(FLTK_MSVC_RUNTIME_DLL "use MSVC Runtime-DLL (/MDx)" ON)
   if(FLTK_MSVC_RUNTIME_DLL)
     set(CMAKE_MSVC_RUNTIME_LIBRARY "MultiThreaded$<$<CONFIG:Debug>:Debug>DLL")
   else()
     set(CMAKE_MSVC_RUNTIME_LIBRARY "MultiThreaded$<$<CONFIG:Debug>:Debug>")
   endif()
-endif(MSVC)
+else(WIN32 AND NOT MINGW AND NOT MSYS)
+  # suppress CMake warning if the user sets FLTK_MSVC_RUNTIME_DLL on other platforms
+  if(DEFINED FLTK_MSVC_RUNTIME_DLL)
+    unset(FLTK_MSVC_RUNTIME_DLL)
+    unset(FLTK_MSVC_RUNTIME_DLL CACHE)
+  endif()
+endif(WIN32 AND NOT MINGW AND NOT MSYS)
 
 #######################################################################
 
@@ -111,15 +118,21 @@ endif(APPLE)
 #  Bundled Library Options
 #######################################################################
 
-option(FLTK_USE_SYSTEM_LIBJPEG "use system libjpeg" OFF)
-option(FLTK_USE_SYSTEM_LIBPNG  "use system libpng"  OFF)
-option(FLTK_USE_SYSTEM_ZLIB    "use system zlib"    OFF)
+if(WIN32 OR (APPLE AND NOT FLTK_BACKEND_X11))
+  option(FLTK_USE_SYSTEM_LIBJPEG "use system libjpeg" OFF)
+  option(FLTK_USE_SYSTEM_LIBPNG  "use system libpng"  OFF)
+  option(FLTK_USE_SYSTEM_ZLIB    "use system zlib"    OFF)
+else()
+  option(FLTK_USE_SYSTEM_LIBJPEG "use system libjpeg" ON)
+  option(FLTK_USE_SYSTEM_LIBPNG  "use system libpng"  ON)
+  option(FLTK_USE_SYSTEM_ZLIB    "use system zlib"    ON)
+endif()
 
 # Set default values of internal build options
 
-set(FLTK_USE_BUNDLED_JPEG TRUE)
-set(FLTK_USE_BUNDLED_PNG  TRUE)
-set(FLTK_USE_BUNDLED_ZLIB TRUE)
+set(FLTK_USE_BUNDLED_JPEG FALSE)
+set(FLTK_USE_BUNDLED_PNG  FALSE)
+set(FLTK_USE_BUNDLED_ZLIB FALSE)
 
 # Collect libraries to build fltk_images (starting empty)
 
@@ -418,7 +431,7 @@ option(FLTK_USE_POLL "use poll if available" OFF)
 mark_as_advanced(FLTK_USE_POLL)
 
 if(FLTK_USE_POLL)
-  check_function_exists(poll USE_POLL)
+  check_symbol_exists(poll   "poll.h"   USE_POLL)
 endif(FLTK_USE_POLL)
 
 #######################################################################
@@ -605,7 +618,7 @@ endif(FLTK_OPTION_SVG)
 
 #######################################################################
 
-# FIXME: GL libs have already been searched in resources.cmake
+# FIXME: GLU libs have already been searched in resources.cmake
 
 set(HAVE_GL LIB_GL OR LIB_MesaGL)
 set(FLTK_USE_GL FALSE)
@@ -675,8 +688,8 @@ set(FLTK_GL_FOUND FALSE)
 
 if(OPENGL_FOUND)
   set(FLTK_GL_FOUND TRUE)
-  find_path(OPENGL_GLU_INCLUDE_DIR NAMES GL/glu.h OpenGL/glu.h HINTS ${OPENGL_INCLUDE_DIR} ${X11_INCLUDE_DIR})
-  set(CMAKE_REQUIRED_INCLUDES ${OPENGL_INCLUDE_DIR}/GL ${OPENGL_GLU_INCLUDE_DIR})
+  find_path(FLTK_OPENGL_GLU_INCLUDE_DIR NAMES GL/glu.h OpenGL/glu.h HINTS ${OPENGL_INCLUDE_DIR} ${X11_INCLUDE_DIR})
+  set(CMAKE_REQUIRED_INCLUDES ${OPENGL_INCLUDE_DIR}/GL ${FLTK_OPENGL_GLU_INCLUDE_DIR})
 
   if(WIN32)
     list(APPEND GLLIBS -lglu32 -lopengl32)
@@ -693,7 +706,7 @@ if(OPENGL_FOUND)
   # check if function glXGetProcAddressARB exists
   set(TEMP_REQUIRED_LIBRARIES ${CMAKE_REQUIRED_LIBRARIES})
   set(CMAKE_REQUIRED_LIBRARIES ${OPENGL_LIBRARIES})
-  check_function_exists(glXGetProcAddressARB HAVE_GLXGETPROCADDRESSARB)
+  check_symbol_exists(glXGetProcAddressARB  "glx.h"   HAVE_GLXGETPROCADDRESSARB)
   set(CMAKE_REQUIRED_LIBRARIES ${TEMP_REQUIRED_LIBRARIES})
   unset(TEMP_REQUIRED_LIBRARIES)
 endif(OPENGL_FOUND)