Import RTFL 0.1.1v0.1.1

1 files changed, 739 insertions, 0 deletions

diff --git a/dw/fltkplatform.cc b/dw/fltkplatform.cc
new file mode 100644
index 0000000..a244765
--- /dev/null
+++ b/dw/fltkplatform.cc
@@ -0,0 +1,739 @@
+/*
+ * RTFL (originally part of dillo)
+ *
+ * Copyright 2005-2007 Sebastian Geerken <sgeerken@dillo.org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version; with the following exception:
+ *
+ * The copyright holders of RTFL give you permission to link this file
+ * statically or dynamically against all versions of the graphviz
+ * library, which are published by AT&T Corp. under one of the following
+ * licenses:
+ *
+ * - Common Public License version 1.0 as published by International
+ *   Business Machines Corporation (IBM), or
+ * - Eclipse Public License version 1.0 as published by the Eclipse
+ *   Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <stdio.h>
+
+#include "../lout/msg.h"
+#include "../lout/debug.hh"
+#include "fltkcore.hh"
+
+#include <FL/fl_draw.H>
+#include <FL/Fl_Box.H>
+#include <FL/Fl_Tooltip.H>
+#include <FL/Fl_Menu_Window.H>
+#include <FL/Fl_Paged_Device.H>
+
+/*
+ * Local data
+ */
+
+/* Tooltips */
+static Fl_Menu_Window *tt_window = NULL;
+static int in_tooltip = 0, req_tooltip = 0;
+
+namespace dw {
+namespace fltk {
+
+using namespace lout;
+
+/**
+ * \todo Distinction between italics and oblique would be nice.
+ */
+
+container::typed::HashTable <dw::core::style::FontAttrs,
+                             FltkFont> *FltkFont::fontsTable =
+   new container::typed::HashTable <dw::core::style::FontAttrs,
+                                    FltkFont> (false, false);
+
+container::typed::HashTable <lout::object::ConstString,
+                             FltkFont::FontFamily> *FltkFont::systemFonts =
+                             NULL;
+
+FltkFont::FontFamily FltkFont::standardFontFamily (FL_HELVETICA,
+                                                   FL_HELVETICA_BOLD,
+                                                   FL_HELVETICA_ITALIC,
+                                                   FL_HELVETICA_BOLD_ITALIC);
+
+FltkFont::FontFamily::FontFamily (Fl_Font fontNormal, Fl_Font fontBold,
+                                  Fl_Font fontItalic, Fl_Font fontBoldItalic)
+{
+   font[0] = fontNormal;
+   font[1] = fontBold;
+   font[2] = fontItalic;
+   font[3] = fontBoldItalic;
+}
+
+void FltkFont::FontFamily::set (Fl_Font f, int attrs)
+{
+   int idx = 0;
+   if (attrs & FL_BOLD)
+      idx += 1;
+   if (attrs & FL_ITALIC)
+      idx += 2;
+   font[idx] = f;
+}
+
+Fl_Font FltkFont::FontFamily::get (int attrs)
+{
+   int idx = 0;
+   if (attrs & FL_BOLD)
+      idx += 1;
+   if (attrs & FL_ITALIC)
+      idx += 2;
+
+   // should the desired font style not exist, we
+   // return the normal font of the fontFamily
+   return font[idx] >= 0 ? font[idx] : font[0];
+}
+
+
+
+FltkFont::FltkFont (core::style::FontAttrs *attrs)
+{
+   if (!systemFonts)
+      initSystemFonts ();
+
+   copyAttrs (attrs);
+
+   int fa = 0;
+   if (weight >= 500)
+      fa |= FL_BOLD;
+   if (style != core::style::FONT_STYLE_NORMAL)
+      fa |= FL_ITALIC;
+
+   object::ConstString nameString (name);
+   FontFamily *family = systemFonts->get (&nameString);
+   if (!family)
+      family = &standardFontFamily;
+
+   font = family->get (fa);
+
+   fl_font(font, size);
+   // WORKAROUND: A bug with fl_width(uint_t) on non-xft X was present in
+   // 1.3.0 (STR #2688).
+   spaceWidth = misc::max(0, (int)fl_width(" ") + letterSpacing);
+   int xx, xy, xw, xh;
+   fl_text_extents("x", xx, xy, xw, xh);
+   xHeight = xh;
+   descent = fl_descent();
+   ascent = fl_height() - descent;
+}
+
+FltkFont::~FltkFont ()
+{
+   fontsTable->remove (this);
+}
+
+static void strstrip(char *big, const char *little)
+{
+   if (strlen(big) >= strlen(little) &&
+      misc::AsciiStrcasecmp(big + strlen(big) - strlen(little), little) == 0)
+      *(big + strlen(big) - strlen(little)) = '\0';
+}
+
+void FltkFont::initSystemFonts ()
+{
+   systemFonts = new container::typed::HashTable
+      <lout::object::ConstString, FontFamily> (true, true);
+
+   int k = Fl::set_fonts ("-*-iso10646-1");
+   for (int i = 0; i < k; i++) {
+      int t;
+      char *name = strdup (Fl::get_font_name ((Fl_Font) i, &t));
+
+      // normalize font family names (strip off "bold", "italic")
+      if (t & FL_ITALIC)
+         strstrip(name, " italic");
+      if (t & FL_BOLD)
+         strstrip(name, " bold");
+
+      _MSG("Found font: %s%s%s\n", name, t & FL_BOLD ? " bold" : "",
+                                  t & FL_ITALIC ? " italic" : "");
+
+      object::String *familyName = new object::String(name);
+      free (name);
+      FontFamily *family = systemFonts->get (familyName);
+
+      if (family) {
+         family->set ((Fl_Font) i, t);
+         delete familyName;
+      } else {
+         // set first font of family also as normal font in case there
+         // is no normal (non-bold, non-italic) font
+         family = new FontFamily ((Fl_Font) i, -1, -1, -1);
+         family->set ((Fl_Font) i, t);
+         systemFonts->put (familyName, family);
+      }
+   }
+}
+
+bool
+FltkFont::fontExists (const char *name)
+{
+   if (!systemFonts)
+      initSystemFonts ();
+   object::ConstString familyName (name);
+   return systemFonts->get (&familyName) != NULL;
+}
+
+Fl_Font
+FltkFont::get (const char *name, int attrs)
+{
+   if (!systemFonts)
+      initSystemFonts ();
+   object::ConstString familyName (name);
+   FontFamily *family = systemFonts->get (&familyName);
+   if (family)
+      return family->get (attrs);
+   else
+      return FL_HELVETICA;
+}
+
+bool
+FltkPlatform::fontExists (const char *name)
+{
+   return FltkFont::fontExists (name);
+}
+
+FltkFont*
+FltkFont::create (core::style::FontAttrs *attrs)
+{
+   FltkFont *font = fontsTable->get (attrs);
+
+   if (font == NULL) {
+      font = new FltkFont (attrs);
+      fontsTable->put (font, font);
+   }
+
+   return font;
+}
+
+container::typed::HashTable <dw::core::style::ColorAttrs,
+                             FltkColor>
+   *FltkColor::colorsTable =
+      new container::typed::HashTable <dw::core::style::ColorAttrs,
+                                       FltkColor> (false, false);
+
+FltkColor::FltkColor (int color): Color (color)
+{
+   this->color = color;
+
+   if (!(colors[SHADING_NORMAL] = shadeColor (color, SHADING_NORMAL) << 8))
+      colors[SHADING_NORMAL] = FL_BLACK;
+   if (!(colors[SHADING_INVERSE] = shadeColor (color, SHADING_INVERSE) << 8))
+      colors[SHADING_INVERSE] = FL_BLACK;
+   if (!(colors[SHADING_DARK] = shadeColor (color, SHADING_DARK) << 8))
+      colors[SHADING_DARK] = FL_BLACK;
+   if (!(colors[SHADING_LIGHT] = shadeColor (color, SHADING_LIGHT) << 8))
+      colors[SHADING_LIGHT] = FL_BLACK;
+}
+
+FltkColor::~FltkColor ()
+{
+   colorsTable->remove (this);
+}
+
+FltkColor * FltkColor::create (int col)
+{
+   ColorAttrs attrs(col);
+   FltkColor *color = colorsTable->get (&attrs);
+
+   if (color == NULL) {
+      color = new FltkColor (col);
+      colorsTable->put (color, color);
+   }
+
+   return color;
+}
+
+FltkTooltip::FltkTooltip (const char *text) : Tooltip(text)
+{
+}
+
+FltkTooltip::~FltkTooltip ()
+{
+   if (in_tooltip || req_tooltip)
+      cancel(); /* cancel tooltip window */
+}
+
+FltkTooltip *FltkTooltip::create (const char *text)
+{
+   return new FltkTooltip(text);
+}
+
+/*
+ * Tooltip callback: used to delay it a bit
+ * INVARIANT: Only one instance of this function is requested.
+ */
+static void tooltip_tcb(void *data)
+{
+   req_tooltip = 2;
+   ((FltkTooltip *)data)->onEnter();
+   req_tooltip = 0;
+}
+
+void FltkTooltip::onEnter()
+{
+   _MSG("FltkTooltip::onEnter\n");
+   if (!str || !*str)
+      return;
+   if (req_tooltip == 0) {
+      Fl::remove_timeout(tooltip_tcb);
+      Fl::add_timeout(1.0, tooltip_tcb, this);
+      req_tooltip = 1;
+      return;
+   }
+
+   if (!tt_window) {
+      tt_window = new Fl_Menu_Window(0,0,100,24);
+      tt_window->set_override();
+      tt_window->box(FL_NO_BOX);
+      Fl_Box *b = new Fl_Box(0,0,100,24);
+      b->box(FL_BORDER_BOX);
+      b->color(fl_color_cube(FL_NUM_RED-1, FL_NUM_GREEN-1, FL_NUM_BLUE-2));
+      b->labelcolor(FL_BLACK);
+      b->labelfont(FL_HELVETICA);
+      b->labelsize(14);
+      b->align(FL_ALIGN_WRAP|FL_ALIGN_LEFT|FL_ALIGN_INSIDE);
+      tt_window->resizable(b);
+      tt_window->end();
+   }
+
+   /* prepare tooltip window */
+   int x, y;
+   Fl_Box *box = (Fl_Box*)tt_window->child(0);
+   box->label(str);
+   Fl::get_mouse(x,y); y += 6;
+   /* calculate window size */
+   int ww, hh;
+   ww = 800; // max width;
+   box->measure_label(ww, hh);
+   ww += 6 + 2 * Fl::box_dx(box->box());
+   hh += 6 + 2 * Fl::box_dy(box->box());
+   tt_window->resize(x,y,ww,hh);
+   tt_window->show();
+   in_tooltip = 1;
+}
+
+/*
+ * Leaving the widget cancels the tooltip
+ */
+void FltkTooltip::onLeave()
+{
+   _MSG(" FltkTooltip::onLeave  in_tooltip=%d\n", in_tooltip);
+   cancel();
+}
+
+void FltkPlatform::cancelTooltip()
+{
+   FltkTooltip::cancel();
+}
+
+/*
+ * Remove a shown tooltip or cancel a pending one
+ */
+void FltkTooltip::cancel()
+{
+   if (req_tooltip) {
+      Fl::remove_timeout(tooltip_tcb);
+      req_tooltip = 0;
+   }
+   if (!in_tooltip) return;
+   in_tooltip = 0;
+   tt_window->hide();
+
+   /* WORKAROUND: (Black magic here)
+    * Hiding a tooltip with the keyboard or mousewheel doesn't work.
+    * The code below "fixes" the problem */
+   Fl_Widget *widget = Fl::belowmouse();
+   if (widget && widget->window()) {
+      widget->window()->damage(FL_DAMAGE_EXPOSE,0,0,1,1);
+   }
+}
+
+void FltkTooltip::onMotion()
+{
+}
+
+void FltkView::addFltkWidget (Fl_Widget *widget,
+                              core::Allocation *allocation)
+{
+}
+
+void FltkView::removeFltkWidget (Fl_Widget *widget)
+{
+}
+
+void FltkView::allocateFltkWidget (Fl_Widget *widget,
+                                   core::Allocation *allocation)
+{
+}
+
+void FltkView::drawFltkWidget (Fl_Widget *widget, core::Rectangle *area)
+{
+}
+
+
+core::ui::LabelButtonResource *
+FltkPlatform::FltkResourceFactory::createLabelButtonResource (const char
+                                                              *label)
+{
+   return new ui::FltkLabelButtonResource (platform, label);
+}
+
+core::ui::ComplexButtonResource *
+FltkPlatform::FltkResourceFactory::createComplexButtonResource (core::Widget
+                                                                *widget,
+                                                                bool relief)
+{
+   // Not needed within RTFL.
+   lout::misc::assertNotReached ();
+   return NULL;
+}
+
+core::ui::ListResource *
+FltkPlatform::FltkResourceFactory::createListResource (core::ui
+                                                       ::ListResource
+                                                       ::SelectionMode
+                                                       selectionMode, int rows)
+{
+   return new ui::FltkListResource (platform, selectionMode, rows);
+}
+
+core::ui::OptionMenuResource *
+FltkPlatform::FltkResourceFactory::createOptionMenuResource ()
+{
+   return new ui::FltkOptionMenuResource (platform);
+}
+
+core::ui::EntryResource *
+FltkPlatform::FltkResourceFactory::createEntryResource (int size,
+                                                        bool password,
+                                                        const char *label)
+{
+   return new ui::FltkEntryResource (platform, size, password, label);
+}
+
+core::ui::MultiLineTextResource *
+FltkPlatform::FltkResourceFactory::createMultiLineTextResource (int cols,
+                                                                int rows)
+{
+   return new ui::FltkMultiLineTextResource (platform, cols, rows);
+}
+
+core::ui::CheckButtonResource *
+FltkPlatform::FltkResourceFactory::createCheckButtonResource (bool activated)
+{
+   return new ui::FltkCheckButtonResource (platform, activated);
+}
+
+core::ui::RadioButtonResource
+*FltkPlatform::FltkResourceFactory::createRadioButtonResource
+(core::ui::RadioButtonResource *groupedWith, bool activated)
+{
+   return
+      new ui::FltkRadioButtonResource (platform,
+                                       (ui::FltkRadioButtonResource*)
+                                       groupedWith,
+                                       activated);
+}
+
+// ----------------------------------------------------------------------
+
+FltkPlatform::FltkPlatform ()
+{
+   DBG_OBJ_CREATE ("dw::fltk::FltkPlatform");
+
+   layout = NULL;
+   idleQueue = new container::typed::List <IdleFunc> (true);
+   idleFuncRunning = false;
+   idleFuncId = 0;
+
+   view = NULL;
+   resources = new container::typed::List <ui::FltkResource> (false);
+
+   resourceFactory.setPlatform (this);
+}
+
+FltkPlatform::~FltkPlatform ()
+{
+   if (idleFuncRunning)
+      Fl::remove_idle (generalStaticIdle, (void*)this);
+   delete idleQueue;
+   delete resources;
+
+   DBG_OBJ_DELETE ();
+}
+
+void FltkPlatform::setLayout (core::Layout *layout)
+{
+   this->layout = layout;
+   DBG_OBJ_ASSOC_CHILD (layout);
+}
+
+
+void FltkPlatform::attachView (core::View *view)
+{
+   if (this->view)
+      MSG_ERR("FltkPlatform::attachView: multiple views!\n");
+   this->view = (FltkView*)view;
+
+   for (container::typed::Iterator <ui::FltkResource> it =
+           resources->iterator (); it.hasNext (); ) {
+      ui::FltkResource *resource = it.getNext ();
+      resource->attachView (this->view);
+   }
+}
+
+
+void FltkPlatform::detachView (core::View *view)
+{
+   if (this->view != view)
+      MSG_ERR("FltkPlatform::detachView: this->view: %p view: %p\n",
+              this->view, view);
+
+   for (container::typed::Iterator <ui::FltkResource> it =
+           resources->iterator (); it.hasNext (); ) {
+      ui::FltkResource *resource = it.getNext ();
+      resource->detachView ((FltkView*)view);
+   }
+   this->view = NULL;
+}
+
+
+int FltkPlatform::textWidth (core::style::Font *font, const char *text,
+                             int len)
+{
+   char chbuf[4];
+   int c, cu;
+   int width = 0;
+   FltkFont *ff = (FltkFont*) font;
+   int curr = 0, next = 0, nb;
+
+   if (font->fontVariant == core::style::FONT_VARIANT_SMALL_CAPS) {
+      int sc_fontsize = lout::misc::roundInt(ff->size * 0.78);
+      for (curr = 0; next < len; curr = next) {
+         next = nextGlyph(text, curr);
+         c = fl_utf8decode(text + curr, text + next, &nb);
+         if ((cu = fl_toupper(c)) == c) {
+            /* already uppercase, just draw the character */
+            fl_font(ff->font, ff->size);
+            if (fl_nonspacing(cu) == 0) {
+               width += font->letterSpacing;
+               width += (int)fl_width(text + curr, next - curr);
+            }
+         } else {
+            /* make utf8 string for converted char */
+            nb = fl_utf8encode(cu, chbuf);
+            fl_font(ff->font, sc_fontsize);
+            if (fl_nonspacing(cu) == 0) {
+               width += font->letterSpacing;
+               width += (int)fl_width(chbuf, nb);
+            }
+         }
+      }
+   } else {
+      fl_font (ff->font, ff->size);
+      width = (int) fl_width (text, len);
+
+      if (font->letterSpacing) {
+         int curr = 0, next = 0;
+
+         while (next < len) {
+            next = nextGlyph(text, curr);
+            c = fl_utf8decode(text + curr, text + next, &nb);
+            if (fl_nonspacing(c) == 0)
+               width += font->letterSpacing;
+            curr = next;
+         }
+      }
+   }
+
+   return width;
+}
+
+char *FltkPlatform::textToUpper (const char *text, int len)
+{
+   char *newstr = NULL;
+
+   if (len > 0) {
+      int newlen;
+
+      newstr = (char*) malloc(3 * len + 1);
+      newlen = fl_utf_toupper((const unsigned char*)text, len, newstr);
+      assert(newlen <= 3 * len);
+      newstr[newlen] = '\0';
+   }
+   return newstr;
+}
+
+char *FltkPlatform::textToLower (const char *text, int len)
+{
+   char *newstr = NULL;
+
+   if (len > 0) {
+      int newlen;
+
+      newstr = (char*) malloc(3 * len + 1);
+      newlen = fl_utf_tolower((const unsigned char*)text, len, newstr);
+      assert(newlen <= 3 * len);
+      newstr[newlen] = '\0';
+   }
+   return newstr;
+}
+
+int FltkPlatform::nextGlyph (const char *text, int idx)
+{
+   return fl_utf8fwd (&text[idx + 1], text, &text[strlen (text)]) - text;
+}
+
+int FltkPlatform::prevGlyph (const char *text, int idx)
+{
+   return fl_utf8back (&text[idx - 1], text, &text[strlen (text)]) - text;
+}
+
+float FltkPlatform::dpiX ()
+{
+   float horizontal, vertical;
+
+   Fl::screen_dpi(horizontal, vertical);
+   return horizontal;
+}
+
+float FltkPlatform::dpiY ()
+{
+   float horizontal, vertical;
+
+   Fl::screen_dpi(horizontal, vertical);
+   return vertical;
+}
+
+void FltkPlatform::generalStaticIdle (void *data)
+{
+   ((FltkPlatform*)data)->generalIdle();
+}
+
+void FltkPlatform::generalIdle ()
+{
+   IdleFunc *idleFunc;
+
+   if (!idleQueue->isEmpty ()) {
+      /* Execute the first function in the list. */
+      idleFunc = idleQueue->getFirst ();
+      (layout->*(idleFunc->func)) ();
+
+      /* Remove this function. */
+      idleQueue->removeRef(idleFunc);
+   }
+
+   if (idleQueue->isEmpty()) {
+      idleFuncRunning = false;
+      Fl::remove_idle (generalStaticIdle, (void*)this);
+   }
+}
+
+/**
+ * \todo Incomplete comments.
+ */
+int FltkPlatform::addIdle (void (core::Layout::*func) ())
+{
+   /*
+    * Since ... (todo) we have to wrap around fltk_add_idle. There is only one
+    * idle function, the passed idle function is put into a queue.
+    */
+   if (!idleFuncRunning) {
+      Fl::add_idle (generalStaticIdle, (void*)this);
+      idleFuncRunning = true;
+   }
+
+   idleFuncId++;
+
+   IdleFunc *idleFunc = new IdleFunc();
+   idleFunc->id = idleFuncId;
+   idleFunc->func = func;
+   idleQueue->append (idleFunc);
+
+   return idleFuncId;
+}
+
+void FltkPlatform::removeIdle (int idleId)
+{
+   bool found;
+   container::typed::Iterator <IdleFunc> it;
+   IdleFunc *idleFunc;
+
+   for (found = false, it = idleQueue->iterator(); !found && it.hasNext(); ) {
+      idleFunc = it.getNext();
+      if (idleFunc->id == idleId) {
+         idleQueue->removeRef (idleFunc);
+         found = true;
+      }
+   }
+
+   if (idleFuncRunning && idleQueue->isEmpty())
+      Fl::remove_idle (generalStaticIdle, (void*)this);
+}
+
+core::style::Font *FltkPlatform::createFont (core::style::FontAttrs
+                                             *attrs,
+                                             bool tryEverything)
+{
+   return FltkFont::create (attrs);
+}
+
+core::style::Color *FltkPlatform::createColor (int color)
+{
+   return FltkColor::create (color);
+}
+
+core::style::Tooltip *FltkPlatform::createTooltip (const char *text)
+{
+   return FltkTooltip::create (text);
+}
+
+void FltkPlatform::copySelection(const char *text)
+{
+   Fl::copy(text, strlen(text), 0);
+}
+
+core::Imgbuf *FltkPlatform::createImgbuf (core::Imgbuf::Type type,
+                                          int width, int height, double gamma)
+{
+   return new FltkImgbuf (type, width, height, gamma);
+}
+
+core::ui::ResourceFactory *FltkPlatform::getResourceFactory ()
+{
+   return &resourceFactory;
+}
+
+
+void FltkPlatform::attachResource (ui::FltkResource *resource)
+{
+   resources->append (resource);
+   resource->attachView (view);
+}
+
+void FltkPlatform::detachResource (ui::FltkResource *resource)
+{
+   resources->removeRef (resource);
+}
+
+} // namespace fltk
+} // namespace dw