December 2007 - Dillo-dev - lists.mailman3.com

[PATCH] implements dw::fltk::ui::FltkMultiLineTextResource
by onepoint＠starurchin.org 17 Dec '07

17 Dec '07

I promised you all something more substantial than whitespace and comment fixes next, didn't I? This patch implements the dw::fltk::ui::FltkMultiLineTextResource class, using ::fltk:LMultiLineInput to create the widget. It also adds a FltkMultiLineTextResource to the dw-ui-test example. This isn't complete yet; the number of rows and columns are hardwired. Comments are welcome. Regards, Jeremy Henty diff -pru -- dw2-ref/dw/fltkplatform.cc dw2-cur/dw/fltkplatform.cc --- dw2-ref/dw/fltkplatform.cc 2007-12-06 17:29:59.000000000 +0000 +++ dw2-cur/dw/fltkplatform.cc 2007-12-15 01:41:02.000000000 +0000 @@ -144,8 +144,7 @@ FltkPlatform::FltkResourceFactory::creat core::ui::MultiLineTextResource * FltkPlatform::FltkResourceFactory::createMultiLineTextResource () { - /** \bug Not implemented. */ - return NULL; + return new ui::FltkMultiLineTextResource (platform); } core::ui::CheckButtonResource * diff -pru -- dw2-ref/dw/fltkui.cc dw2-cur/dw/fltkui.cc --- dw2-ref/dw/fltkui.cc 2007-12-06 17:29:59.000000000 +0000 +++ dw2-cur/dw/fltkui.cc 2007-12-15 02:34:13.000000000 +0000 @@ -30,6 +30,7 @@ #include <fltk/Group.h> #include <fltk/Input.h> #include <fltk/SecretInput.h> +#include <fltk/MultiLineInput.h> #include <fltk/RadioButton.h> #include <fltk/CheckButton.h> #include <fltk/Choice.h> @@ -527,6 +528,107 @@ void FltkEntryResource::setEditable (boo // ---------------------------------------------------------------------- +FltkMultiLineTextResource::FltkMultiLineTextResource (FltkPlatform *platform): + FltkSpecificResource <dw::core::ui::MultiLineTextResource> (platform) +{ + initText = NULL; + editable = false; + + init (platform); +} + +FltkMultiLineTextResource::~FltkMultiLineTextResource () +{ + if (initText) + delete initText; +} + +::fltk::Widget *FltkMultiLineTextResource::createNewWidget (core::Allocation + *allocation) +{ + ::fltk::MultiLineInput *input = + new ::fltk::MultiLineInput (allocation->x, allocation->y, + allocation->width, + allocation->ascent + allocation->descent); + input->callback (widgetCallback, this); + input->when (::fltk::WHEN_ENTER_KEY_ALWAYS); + + if (viewsAndWidgets->isEmpty ()) { + // First widget created, attach the set text. + if (initText) + input->value (initText); + } else + input->value + (((::fltk::MultiLineInput*)viewsAndWidgets->getFirst()->widget)->value ()); + + return input; +} + +void FltkMultiLineTextResource::sizeRequest (core::Requisition *requisition) +{ + if (style) { + FltkFont *font = (FltkFont*)style->font; + requisition->width = + (int)::fltk::getwidth ("M", 1) * 20 + + 2 * RELIEF_X_THICKNESS; + requisition->ascent = RELIEF_Y_THICKNESS; + requisition->descent = + (font->ascent + font->descent) * 10 + RELIEF_Y_THICKNESS; + } else { + requisition->width = 1; + requisition->ascent = 1; + requisition->descent = 0; + } +} + +void FltkMultiLineTextResource::widgetCallback (::fltk::Widget *widget, + void *data) +{ + /* The (::fltk::event_key() == ::fltk::ReturnKey) test + * is necessary because WHEN_ENTER_KEY also includes + * other events we're not interested in. For instance pressing + * The Back or Forward, buttons, or the first click on a rendered + * page. BUG: this must be investigated and reported to FLTK2 team + */ + printf ("when = %d\n", widget->when ()); + if ((widget->when () & ::fltk::WHEN_ENTER_KEY_ALWAYS) && + (::fltk::event_key() == ::fltk::ReturnKey)) + ((FltkMultiLineTextResource*)data)->emitActivate (); +} + +const char *FltkMultiLineTextResource::getText () +{ + if (viewsAndWidgets->isEmpty ()) + return initText; + else + return ((::fltk::MultiLineInput*)viewsAndWidgets->getFirst()->widget)->value (); +} + +void FltkMultiLineTextResource::setText (const char *text) +{ + if (initText) + delete initText; + initText = strdup (text); + + for (Iterator <ViewAndWidget> it = viewsAndWidgets->iterator (); + it.hasNext(); ) { + ViewAndWidget *viewAndWidget = it.getNext (); + ((::fltk::MultiLineInput*)viewAndWidget->widget)->value (initText); + } +} + +bool FltkMultiLineTextResource::isEditable () +{ + return editable; +} + +void FltkMultiLineTextResource::setEditable (bool editable) +{ + this->editable = editable; +} + +// ---------------------------------------------------------------------- + template <class I> FltkToggleButtonResource<I>::FltkToggleButtonResource (FltkPlatform *platform, bool activated): diff -pru -- dw2-ref/dw/fltkui.hh dw2-cur/dw/fltkui.hh --- dw2-ref/dw/fltkui.hh 2007-10-06 23:03:01.000000000 +0100 +++ dw2-cur/dw/fltkui.hh 2007-12-15 01:28:53.000000000 +0000 @@ -313,6 +313,31 @@ public: }; +class FltkMultiLineTextResource: + public FltkSpecificResource <dw::core::ui::MultiLineTextResource> +{ +private: + const char *initText; + bool editable; + + static void widgetCallback (::fltk::Widget *widget, void *data); + +protected: + ::fltk::Widget *createNewWidget (core::Allocation *allocation); + +public: + FltkMultiLineTextResource (FltkPlatform *platform); + ~FltkMultiLineTextResource (); + + void sizeRequest (core::Requisition *requisition); + + const char *getText (); + void setText (const char *text); + bool isEditable (); + void setEditable (bool editable); +}; + + template <class I> class FltkToggleButtonResource: public FltkSpecificResource <I> { diff -pru -- dw2-ref/test/dw_ui_test.cc dw2-cur/test/dw_ui_test.cc --- dw2-ref/test/dw_ui_test.cc 2007-10-06 23:03:01.000000000 +0100 +++ dw2-cur/test/dw_ui_test.cc 2007-12-15 02:35:22.000000000 +0000 @@ -44,10 +44,10 @@ int main(int argc, char **argv) FltkPlatform *platform = new FltkPlatform (); Layout *layout = new Layout (platform); - ::fltk::Window *window = new ::fltk::Window(300, 300, "Dw UI Test"); + ::fltk::Window *window = new ::fltk::Window(400, 400, "Dw UI Test"); window->begin(); - FltkViewport *viewport = new FltkViewport (0, 0, 300, 300); + FltkViewport *viewport = new FltkViewport (0, 0, 400, 400); layout->attachView (viewport); StyleAttrs styleAttrs; @@ -83,6 +83,8 @@ int main(int argc, char **argv) entryres1->setText ("Hi!"); EntryResource *entryres2 = layout->getResourceFactory()->createEntryResource (10, true); + MultiLineTextResource *textres = + layout->getResourceFactory()->createMultiLineTextResource (); RadioButtonResource *radiores1 = layout->getResourceFactory()->createRadioButtonResource (NULL, false); RadioButtonResource *radiores2 = @@ -115,6 +117,7 @@ int main(int argc, char **argv) form::Form *form = new form::Form(); form->addTextResource ("val1", entryres1); form->addTextResource ("val2", entryres2); + form->addTextResource ("text", textres); const char *radiovalues[] = { "radio1", "radio2", NULL }; form->addRadioButtonResource ("val3", radiores1, radiovalues); form->addCheckButtonResource ("check", checkres); @@ -151,6 +154,19 @@ int main(int argc, char **argv) table->addCell (input2, 1, 1); table->addRow (cellStyle); + + Textblock *label = new Textblock(false); + label->setStyle (cellStyle); + table->addCell (label, 1, 1); + label->addText (strdup ("text = "), cellStyle); + label->flush (); + + Embed *text = new Embed (textres); + text->setStyle (cellStyle); + table->addCell (text, 1, 1); + + table->addRow (cellStyle); + Textblock *radiolabel1 = new Textblock(false); radiolabel1->setStyle (cellStyle); table->addCell (radiolabel1, 2, 1);

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should new windows inherit panel size and fullscreen mode?
by Johannes.Hofmann＠gmx.de 16 Dec '07

16 Dec '07

Hello, I would like that new browser windows inherit the panel size and fullscreen mode from the current window. What do others think? Cheers, Johannes

3 4

Colspan and table percentages
by jcid＠dillo.org 15 Dec '07

15 Dec '07

Hi! After a lot of work, the patch for better table rendering (regarding colspan and percentages) was good enough to be committed. Please enjoy and send feedback (or patches) ;-). - Implemented a weighted apportionment algorithm for table colspan. - Implemented percentage widths in tables (better rendering!). - Fixed an initialization bug in hruler. If you: #define DBG In table.cc. Verbose debugging output is enabled. I tried to make special and ill cases decision-making similar to firefox, but frankly, some cases are really weird! For instance, take a look here and compare: http://www.dillo.org/test/cs1.html http://www.dillo.org/test/cs7.html // e.g. look at th 20% table Well, the main point is for you to test and to report how it works! -- Cheers Jorge.-

3 9

[PATCH] comment fix in dw2/dw/iterator.hh
by onepoint＠starurchin.org 14 Dec '07

14 Dec '07

The comment near the top of dw2/dw/iterator.hh refers to two methods dw::core::Iterator::pointsOnRealContent and dw::core::hasAnyContents, neither of which exist. (In fact there's no case-insensitive match for pointsOn, OnReal, RealContent, hasAny or AnyContents anywhere in the source.) The only similarly-named method I can find is dw::core::Widget::hasContents so I've changed the comment to mention that. Or maybe the comment should be rewritten or deleted? The next patch will be non-cosmetic, I just wanted to get some cleanups out of my TO-DO. Regards, Jeremy Henty diff -pru -- dw2-ref/dw/iterator.hh dw2-cur/dw/iterator.hh --- dw2-ref/dw/iterator.hh 2007-12-11 11:30:07.000000000 +0000 +++ dw2-cur/dw/iterator.hh 2007-12-13 14:26:43.000000000 +0000 @@ -11,9 +11,8 @@ namespace core { /** * \brief Iterators are used to iterate through the contents of a widget. * - * When using iterators, you should care about the results of - * dw::core::Iterator::pointsOnRealContent and especially - * dw::core::hasAnyContents. + * When using iterators, you should care about the results of + * dw::core::Widget::hasContents. * * \sa dw::core::Widget::iterator */

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[PATCH] DW: indentation in dw/selection.cc
by onepoint＠starurchin.org 12 Dec '07

12 Dec '07

This is purely cosmetic: my changes to dw/selection.cc messed up the indentation so this patch fixes it. Incidentally, does anyone have a version of the emacs C/C++ modes that is consistent with the Dillo source? I've set: c-basic offset: 3 indent-tabs-mode: nil but it still pointlessly reformats the source. In particular it indents the contents of namespace { ... }. Regards, Jeremy Henty diff -pru -- dw2-ref/dw/selection.cc dw2-cur/dw/selection.cc --- dw2-ref/dw/selection.cc 2007-12-11 11:30:07.000000000 +0000 +++ dw2-cur/dw/selection.cc 2007-12-11 20:54:10.000000000 +0000 @@ -123,19 +123,19 @@ bool SelectionState::buttonPress (Iterat linkState = LINK_PRESSED; linkButton = event->button; DeepIterator *newLink = new DeepIterator (it); - if (newLink->isEmpty ()) { - delete newLink; - resetLink (); - } else { - link = newLink; - // It may be that the user has pressed on something activatable - // (linkNo != -1), but there is no contents, e.g. with images - // without ALTernative text. - if (link) { - linkChar = correctCharPos (link, charPos); - linkNumber = linkNo; - } - } + if (newLink->isEmpty ()) { + delete newLink; + resetLink (); + } else { + link = newLink; + // It may be that the user has pressed on something activatable + // (linkNo != -1), but there is no contents, e.g. with images + // without ALTernative text. + if (link) { + linkChar = correctCharPos (link, charPos); + linkNumber = linkNo; + } + } // We do not return the value of the signal method, // but we do actually process this event. ret = true; @@ -148,15 +148,15 @@ bool SelectionState::buttonPress (Iterat selectionState = SELECTING; DeepIterator *newFrom = new DeepIterator (it); - if (newFrom->isEmpty ()) { - delete newFrom; - resetSelection (); - } else { - from = newFrom; - fromChar = correctCharPos (from, charPos); - to = from->cloneDeepIterator (); - toChar = correctCharPos (to, charPos); - } + if (newFrom->isEmpty ()) { + delete newFrom; + resetSelection (); + } else { + from = newFrom; + fromChar = correctCharPos (from, charPos); + to = from->cloneDeepIterator (); + toChar = correctCharPos (to, charPos); + } ret = true; } else { if (event && event->button == 3) {

2 1

BUG: assertion failed: "no widget": in dw::core::DeepIterator::searchSideward
by onepoint＠starurchin.org 11 Dec '07

11 Dec '07

Dillo aborts with an assertion failure if you click to the right of an image that has a line all to itself. For example, go to http://www.thenation.com/doc/20071203/pollitt and click to the right of the "Continued" logo. What happens is that the DeepIterator constructor wants an iterator with non-widget content. If necessary it calls searchDownward and searchSideward until it finds one. Both these methods raise an assertion failure if the iterator already has non-widget content, so the content must be checked before calling *either* of them. However, DeepIterator checks the content before calling searchDownward but *not* before calling searchSideward . Effectively, the code assumes that if searchDownward fails then the content type won't have changed. Unfortunately searchDownward can fail *and* change the content of the iterator to something non-widget. If this happens DeepIterator then calls searchSideward, which triggers the assertion. (NB: DeepIterator is in the dw::core namespace.) I'm trying to fix this but so far I'm just generating more crashes. What exactly should DeepIterator::DeepIterator do if searchDownward fails and changes the content of the iterator? If I know that I'll have another go. Regards, Jeremy Henty

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[patch] fix close button height in page source window
by Johannes.Hofmann＠gmx.de 11 Dec '07

11 Dec '07

Hi, the height of the close button of the source code window changes with the size of the window. The patch below fixes its size. Cheers, Johannes PS: Scrolling in the page source window is dead slow here. But that's definately a fltk issue... diff -r 043b53a25dc3 src/dialog.cc --- a/src/dialog.cc Mon Dec 10 15:42:03 2007 +0100 +++ b/src/dialog.cc Mon Dec 10 18:12:15 2007 +0100 @@ -123,7 +123,7 @@ void a_Dialog_text_window(const char *tx ReturnButton *b = new ReturnButton (0, wh-bh, ww, bh, "Close"); b->callback(window_close_cb, window); - window->resizable(window); + window->resizable(td); window->end(); window->show(); }

2 1

BUG: CCC corrupts memory when the Content-Type is wrong
by onepoint＠starurchin.org 06 Dec '07

06 Dec '07

I am hoping that someone who understands Dillo's CCC better than I can point me in the right direction and save me some time debugging this. Dillo almost always crashes if the HTML contains the stumbleupon.com favicon link, ie.'<img src="http://www.stumbleupon.com/favicon.ico">'. (This is very annoying as it makes Dillo unusable for one of my favourite blogs.) If it doesn't crash right away then clicking Reload crashes it. Examining core dumps with gdb suggests that memory is being corrupted, and running dillo under valgrind shows that the CCC functions are reading, writing and freeing already freed memory. (Details attached.) A local HTTP server triggers the bug when it server returns a Content-Type of "text/plain; charset=iso-8859-1". If I change it to "image/x-icon" there is no corruption. Accessing the image directly via a "file:" URL does not trigger the bug. (Strangely, using a local HTTP server does not hit the bug until I open a second window on the page, although sometimes it crashes first time.) I'm attaching a summary of the invalid memory accesses that valgrind reported, and the entire valgrind log (which includes stack traces). Any suggestions for where I should start instrumenting the CCC to find out why it is prematurely freeing pointers? Jeremy Henty

2 4

[patch] fix crashes after panel size changes
by Johannes.Hofmann＠gmx.de 06 Dec '07

06 Dec '07

Hello, now that was a weird bug! I was experiencing crashes when I had changed the panel size via the right mouse on the search button. The problem is that FltkWidgetView::prepareCreateFltkWidget() was calling fltk::Group::begin(). Therefore after visiting pages with forms, the newly created panel was getting a child of Main instead of TopGroup! Btw. did I mention that this fltk begin()/end() stuff is evil? One could expect that Group::replace() should disconnect the new widget properly from its old parent (if there is any). But that's not the case. I wrote a mail to fltk.general about this. So in the end Main still had a reference to the panel and once it was deleted -- bang. The patch below uses Group::add() directly in FltkWidgetView::addFltkWidget() instead of FltkWidgetView::prepareCreateFltkWidget(). Does anyone remember why FltkWidgetView::prepareCreateFltkWidget() was added in the first place? Cheers, Johannes diff --git a/dw/fltkplatform.cc b/dw/fltkplatform.cc --- a/dw/fltkplatform.cc +++ b/dw/fltkplatform.cc @@ -83,10 +83,6 @@ FltkColor::FltkColor (int color, core::s colors[SHADING_DARK] = shadeColor (color, SHADING_DARK) << 8; colors[SHADING_LIGHT] = shadeColor (color, SHADING_LIGHT) << 8; } -} - -void FltkView::prepareCreateFltkWidget () -{ } void FltkView::addFltkWidget (::fltk::Widget *widget, diff --git a/dw/fltkplatform.hh b/dw/fltkplatform.hh --- a/dw/fltkplatform.hh +++ b/dw/fltkplatform.hh @@ -40,7 +40,6 @@ public: public: virtual bool usesFltkWidgets () = 0; - virtual void prepareCreateFltkWidget (); virtual void addFltkWidget (::fltk::Widget *widget, core::Allocation *allocation); virtual void removeFltkWidget (::fltk::Widget *widget); diff --git a/dw/fltkui.cc b/dw/fltkui.cc --- a/dw/fltkui.cc +++ b/dw/fltkui.cc @@ -103,7 +103,6 @@ void FltkResource::attachView (FltkView ViewAndWidget *viewAndWidget = new ViewAndWidget(); viewAndWidget->view = view; - view->prepareCreateFltkWidget (); viewAndWidget->widget = createNewWidget (&allocation); viewAndWidget->view->addFltkWidget (viewAndWidget->widget, &allocation); viewsAndWidgets->append (viewAndWidget); diff --git a/dw/fltkviewbase.cc b/dw/fltkviewbase.cc --- a/dw/fltkviewbase.cc +++ b/dw/fltkviewbase.cc @@ -375,17 +375,12 @@ bool FltkWidgetView::usesFltkWidgets () return true; } - -void FltkWidgetView::prepareCreateFltkWidget () -{ - begin (); -} - void FltkWidgetView::addFltkWidget (::fltk::Widget *widget, core::Allocation *allocation) { canvasWidgets->append (new TypedPointer < ::fltk::Widget> (widget)); allocateFltkWidget (widget, allocation); + add (widget); } void FltkWidgetView::removeFltkWidget (::fltk::Widget *widget) diff --git a/dw/fltkviewbase.hh b/dw/fltkviewbase.hh --- a/dw/fltkviewbase.hh +++ b/dw/fltkviewbase.hh @@ -82,7 +82,6 @@ public: int x, int y, int width, int height); bool usesFltkWidgets (); - void prepareCreateFltkWidget (); void addFltkWidget (::fltk::Widget *widget, core::Allocation *allocation); void removeFltkWidget (::fltk::Widget *widget); void allocateFltkWidget (::fltk::Widget *widget,

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[patch] initialize mustQueueResize in Textblock constructor
by Johannes.Hofmann＠gmx.de 05 Dec '07

05 Dec '07

Hello, this patch initializes mustQueueResize in the Textblock constructor. Valgrind was complaining about a jump depending on uninitialized memory. Cheers, Johannes diff --git a/dw/textblock.cc b/dw/textblock.cc --- a/dw/textblock.cc +++ b/dw/textblock.cc @@ -39,6 +39,7 @@ Textblock::Textblock (bool limitTextWidt line1Offset = 0; line1OffsetEff = 0; ignoreLine1OffsetSometimes = false; + mustQueueResize = false; /* * The initial sizes of lines and words should not be

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