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diff --git a/doc/fltk-problems.doc b/doc/fltk-problems.doc deleted file mode 100644 index df4f1f14..00000000 --- a/doc/fltk-problems.doc +++ /dev/null @@ -1,180 +0,0 @@ -/** \page fltk-problems Problems with FLTK - -<h2>dw::fltk::FltkViewport</h2> - -Current problems: - -<ul> -<li> How should dw::fltk::FltkViewport::cancelQueueDraw be implemented? - -<li> If the value of a scrollbar is changed by the program, not the user, - the callback seems not to be called. Can this be assured? - -<li> The same for dw::fltk::FltkViewport::layout? - -<li> Also, the problems with the widgets seems to work. Also sure? - -<li> When drawing, clipping of 32 bit values is not working properly. - -<li> The item group within a selection widget (menu) should not be selectable. -</ul> - - -<h2>dw::fltk::FltkPlatform</h2> - -<ul> -<li> There is the problem, that fltk::font always returns a font, the - required one, or a replacements. The latter is not wanted in all - cases, e.g. when several fonts are tested. Perhaps, this could be - solved by searching in the font list. <i>[This was true of fltk2. - What is the state of font handling now with fltk-1.3?]</i> - -<li> Distinction between italics and oblique would be nice - (dw::fltk::FltkFont::FltkFont). -</ul> - - -<h2>dw::fltk::ui::FltkCheckButtonResource</h2> - -Groups of Fl_Radio_Button must be added to one Fl_Group, which is -not possible in this context. There are two alternatives: - -<ol> -<li>there is a more flexible way to group radio buttons, or -<li>radio buttons are not grouped, instead, grouping (especially - unchecking other buttons) is done by the application. -</ol> - -(This is mostly solved.) - -<h2>dw::fltk::FltkImgbuf</h2> - -Alpha transparency should be best abstracted by FLTK itself. If not, -perhaps different implementations for different window systems could -be used. Then, it is for X necessary to use GCs with clipping masks. - - -<h2>dw::fltk::ui::ComplexButton</h2> - -Unfortunately, FLTK does not provide a button with Fl_Group as parent, so -that children may be added to the button. dw::fltk::ui::ComplexButton does -exactly this, and is, in an ugly way, a modified copy of the FLTK -button. - -It would be nice, if this is merged with the standard FLTK -button. Furthermore, setting the type is strange. - -If the files do not compile, it may be useful to create a new one from -the FLTK source: - -<ol> -<li> Copy Fl_Button.H from FLTK to dw/fltkcomplexbutton.hh and - src/Button.cxx to dw/fltkcomplexbutton.cc. - -<li> In both files, rename "Button" to "ComplexButton". Automatic replacing - should work. - -<li> Apply the changes below. -</ol> - -The following changes should be applied manually. - -<h3>Changes in fltkcomplexbutton.hh</h3> - -First of all, the \#define's for avoiding multiple includes: - -\code --#ifndef fltk_ComplexButton_h // fltk_Button_h formerly --#define fltk_ComplexButton_h -+#ifndef __FLTK_COMPLEX_BUTTON_HH__ -+#define __FLTK_COMPLEX_BUTTON_HH__ -\endcode - -at the beginning and - -\code --#endif -+#endif // __FLTK_COMPLEX_BUTTON_HH__ -\endcode - -at the end. Then, the namespace is changed: - -\code --namespace fltk { -+namespace dw { -+namespace fltk { -+namespace ui { -\endcode - -at the beginning and - -\code --} -+} // namespace ui -+} // namespace fltk -+} // namespace dw -\endcode - -at the end. Most important, the base class is changed: - -\code --#include "FL/Fl_Widget.H" -+#include <FL/Fl_Group.H> -\endcode - -and - -\code --class FL_API ComplexButton : public Fl_Widget { -+class ComplexButton: public Fl_Group -+{ -\endcode - -Finally, for dw::fltk::ui::ComplexButton::default_style, there is a -namespace conflict: - -\code -- static NamedStyle* default_style; -+ static ::fltk::NamedStyle* default_style; -\endcode - -<h3>Changes in fltkcomplexbutton.cc</h3> - -First, \#include's: - -\code - - #include <FL/Fl.H> --#include <FL/ComplexButton.h> // <FL/Fl_Button.H> formerly - #include <FL/Fl_Group.H> - #include <FL/Fl_Window.H> -+ -+#include "fltkcomplexbutton.hh" -\endcode - -Second, namespaces: - -\code -+using namespace dw::fltk::ui; -\endcode - -Since the base class is now Fl_Group, the constructor must be changed: - -\code --ComplexButton::ComplexButton(int x,int y,int w,int h, const char *l) : Fl_Widget(x,y,w,h,l) { -+ComplexButton::ComplexButton(int x,int y,int w,int h, const char *l) : -+ Fl_Group(x,y,w,h,l) -+{ -\endcode - -Finally, the button must draw its children (end of -dw::fltk::ui::ComplexButton::draw()): - -\code -+ -+ for (int i = children () - 1; i >= 0; i--) -+ draw_child (*child (i)); - } -\endcode - -*/ |