Initial import of Dillo

src/tipwin.cc

@@ -0,0 +1,245 @@
+/*
+ * File: tipwin.cc
+ *
+ * Copyright 2012 Jorge Arellano Cid <jcid@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.
+ *
+ * The tipwin idea was derived from the Fl_Slider example [1]
+ * by Greg Ercolano, which is in public domain.
+ *
+ * [1] http://seriss.com/people/erco/fltk/#SliderTooltip
+ */
+
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <FL/fl_draw.H>
+#include <FL/Fl.H>
+#include <FL/Fl_Group.H>
+#include <FL/Fl_Menu_Window.H>
+#include <FL/Fl_Tooltip.H>
+#include <FL/Fl_Button.H>
+
+#include "prefs.h"
+#include "tipwin.hh"
+#include "dlib/dlib.h"
+
+/*
+ * Forward declarations
+ */
+static void show_timeout(void*);
+static void recent_timeout(void*);
+
+/**
+ * Custom tooltip window
+ */
+TipWin::TipWin() : Fl_Menu_Window(1, 1)     // will autosize
+{
+   bgcolor = fl_color_cube(FL_NUM_RED - 1, FL_NUM_GREEN - 1, FL_NUM_BLUE - 2);
+   recent = 0;
+   tip[0] = '\0';
+   cur_widget = NULL;
+   set_override(); // no border
+   end();
+}
+
+void TipWin::draw()
+{
+   draw_box(FL_BORDER_BOX, 0, 0, w(), h(), bgcolor);
+   fl_color(FL_BLACK);
+   fl_font(labelfont(), labelsize());
+   fl_draw(tip, 3, 3, w() - 6, h() - 6,
+           //Fl_Align(FL_ALIGN_LEFT | FL_ALIGN_WRAP));
+           Fl_Align(FL_ALIGN_LEFT));
+}
+
+void TipWin::value(const char *s) {
+   // Recalc size of window
+   snprintf(tip, sizeof(tip) - 1, "%s", s);
+   fl_font(labelfont(), labelsize());
+   int W = w(), H = h();
+   W = 0;
+   fl_measure(tip, W, H, 0);
+   W += 8; H += 8;
+   size(W, H);
+   redraw();
+}
+
+void TipWin::do_show(void *wid) {
+   cur_widget = wid;  // Keep track of requesting widget
+   if (prefs.show_ui_tooltip) {
+      Fl::add_timeout(recent ? 0.2f : 0.8f, show_timeout);
+   }
+}
+
+void TipWin::do_hide() {
+   Fl::remove_timeout(show_timeout);
+   if (shown()) {
+      hide();
+      recent = 1;
+      Fl::add_timeout(0.8f, recent_timeout);
+   }
+}
+
+void TipWin::recent_tooltip(int val) {
+   recent = val;
+}
+
+//--------------------------------------------------------------------------
+
+TipWin *my_tipwin(void)
+{
+   static TipWin *tw = NULL;
+
+   if (!tw) {
+      Fl_Group *save = Fl_Group::current();    // save current widget..
+      tw = new TipWin();                       // ..because this trashes it
+      tw->hide();                              // start hidden
+      Fl_Group::current(save);                 // ..then back to previous.
+   }
+   return tw;
+}
+
+static void show_timeout(void*) {
+  // if offscreen, move tip ABOVE mouse instead
+  int scr_x, scr_y, scr_w, scr_h;
+  Fl::screen_xywh(scr_x, scr_y, scr_w, scr_h);
+  int ty = Fl::event_y_root() + 20;
+  if (ty + my_tipwin()->h() > scr_h)
+     ty = Fl::event_y_root() - 20 - my_tipwin()->h();
+  if (ty < 0) ty = 0;
+
+  my_tipwin()->position(Fl::event_x_root(), ty);
+  my_tipwin()->show();
+  my_tipwin()->recent_tooltip(0);
+}
+
+static void recent_timeout(void*) {
+  my_tipwin()->recent_tooltip(0);
+}
+
+
+//---------------------------------------------------------------------------
+
+/**
+ * A Button sharing a custom tooltip window
+ */
+TipWinButton::TipWinButton(int x, int y, int w, int h, const char *l) :
+    Fl_Button(x, y, w, h, l)
+{
+   tipwin = my_tipwin();
+   mytooltip = dStrdup("empty");
+}
+
+TipWinButton::~TipWinButton(void)
+{
+   tipwin->cancel(this); // cancel tooltip if shown
+   free(mytooltip);
+}
+
+int TipWinButton::handle(int e)
+{
+   switch (e) {
+   case FL_ENTER:
+      tipwin->value(mytooltip);
+      tipwin->do_show(this);
+      break;
+   case FL_PUSH:            // push mouse
+   case FL_RELEASE:         // release mouse
+   case FL_HIDE:            // widget goes away
+   case FL_LEAVE:           // leave focus
+      tipwin->do_hide();
+      break;
+   }
+   return (Fl_Button::handle(e));
+}
+
+void TipWinButton::set_tooltip(const char *s)
+{
+   free(mytooltip);
+   mytooltip = dStrdup(s);
+}
+
+
+//---------------------------------------------------------------------------
+
+/**
+ * A Light Button sharing a custom tooltip window
+ */
+CustButton::CustButton(int x, int y, int w, int h, const char *l) :
+   TipWinButton(x,y,w,h,l)
+{
+   norm_color = color();
+   light_color = PREFS_UI_BUTTON_HIGHLIGHT_COLOR;
+}
+
+int CustButton::handle(int e)
+{
+   if (active()) {
+      if (e == FL_ENTER) {
+         color(light_color);
+         redraw();
+      } else if (e == FL_LEAVE || e == FL_RELEASE || e == FL_HIDE) {
+         color(norm_color);
+         redraw();
+      }
+   } else if (e == FL_DEACTIVATE && color() != norm_color) {
+      color(norm_color);
+      redraw();
+   }
+   return TipWinButton::handle(e);
+}
+
+void CustButton::hl_color(Fl_Color col)
+{
+   light_color = col;
+}
+
+
+//---------------------------------------------------------------------------
+
+/**
+ * An Input with custom tooltip window
+ */
+TipWinInput::TipWinInput (int x, int y, int w, int h, const char *l) :
+   Fl_Input(x,y,w,h,l)
+{
+   tipwin = my_tipwin();
+   mytooltip = dStrdup("empty");
+}
+
+TipWinInput::~TipWinInput(void)
+{
+   tipwin->cancel(this); // cancel tooltip if shown
+   free(mytooltip);
+}
+
+int TipWinInput::handle(int e)
+{
+   switch (e) {
+   case FL_ENTER:
+      tipwin->value(mytooltip);
+      tipwin->do_show(this);
+      break;
+   case FL_PUSH:            // push mouse
+   case FL_RELEASE:         // release mouse
+   case FL_HIDE:            // widget goes away
+   case FL_LEAVE:           // leave focus
+   case FL_KEYBOARD:        // key press
+      tipwin->do_hide();
+      break;
+   }
+   return (Fl_Input::handle(e));
+}
+
+void TipWinInput::set_tooltip(const char *s)
+{
+   free(mytooltip);
+   mytooltip = dStrdup(s);
+}
+