[project @ 2003-01-11 17:33:31 by monkeyson]

Mouse gestures.  Recognises the same gestures as Opera, although only
back, forward and reload actually do anything yet.

svn path=/import/netsurf/; revision=91

3 files changed, 270 insertions, 18 deletions

diff --git a/desktop/browser.c b/desktop/browser.c
index 8edf77e9f..63418051f 100644
--- a/desktop/browser.c
+++ b/desktop/browser.c
@@ -1,5 +1,5 @@
 /**
- * $Id: browser.c,v 1.20 2003/01/06 23:53:39 bursa Exp $
+ * $Id: browser.c,v 1.21 2003/01/11 17:33:31 monkeyson Exp $
  */
 
 #include "netsurf/riscos/font.h"
@@ -113,29 +113,34 @@ void set_content_html(struct content* c)
   return;
 }
 
-void content_html_reformat(struct content* c, int width)
+
+char* content_html_reformat(struct content* c, int width)
 {
   char* file;
+  char* title = NULL;
   struct css_selector* selector = xcalloc(1, sizeof(struct css_selector));
 
   LOG(("Starting stuff"));
+
+  /* need to find title of page */
+  
   if (c->data.html.layout != NULL)
   {
     /* TODO: skip if width is unchanged */
     layout_document(c->data.html.layout->children, (unsigned long)width);
-    return;
+    return title;
   }
 
   LOG(("Setting document to myDoc"));
   c->data.html.document = c->data.html.parser->myDoc;
-  xmlDebugDumpDocument(stderr, c->data.html.parser->myDoc);
+  //xmlDebugDumpDocument(stderr, c->data.html.parser->myDoc);
 
   /* skip to start of html */
   LOG(("Skipping to html"));
   if (c->data.html.document == NULL)
   {
     LOG(("There is no document!"));
-    return;
+    return title;
   }
   for (c->data.html.markup = c->data.html.document->children;
        c->data.html.markup != 0 &&
@@ -146,12 +151,12 @@ void content_html_reformat(struct content* c, int width)
   if (c->data.html.markup == 0)
   {
     LOG(("No markup"));
-    return;
+    return title;
   }
   if (strcmp((const char *) c->data.html.markup->name, "html"))
   {
     LOG(("Not html"));
-    return;
+    return title;
   }
 
 //  xfree(c->data.html.stylesheet);
@@ -183,7 +188,7 @@ void content_html_reformat(struct content* c, int width)
 
   /* can tidy up memory here? */
 
-  return;
+  return title;
 }
 
 void browser_window_reformat(struct browser_window* bw)
@@ -203,7 +208,7 @@ void browser_window_reformat(struct browser_window* bw)
       LOG(("HTML content."));
       browser_window_set_status(bw, "Formatting page...");
       time0 = clock();
-      content_html_reformat(bw->current_content, gui_window_get_width(bw->window));
+      gui_window_set_title(bw->window, content_html_reformat(bw->current_content, gui_window_get_width(bw->window)));
       time1 = clock();
       LOG(("Content reformatted"));
       if (bw->current_content->data.html.layout != NULL)
diff --git a/desktop/gui.h b/desktop/gui.h
index 4e6c7975a..3cbc7472a 100644
--- a/desktop/gui.h
+++ b/desktop/gui.h
@@ -1,5 +1,5 @@
 /**
- * $Id: gui.h,v 1.3 2002/12/30 22:56:30 monkeyson Exp $
+ * $Id: gui.h,v 1.4 2003/01/11 17:33:31 monkeyson Exp $
  */
 
 #ifndef _NETSURF_DESKTOP_GUI_H_
@@ -32,6 +32,7 @@ void gui_window_redraw_window(gui_window* g);
 void gui_window_set_scroll(gui_window* g, int sx, int sy);
 void gui_window_set_extent(gui_window* g, int width, int height);
 void gui_window_set_status(gui_window* g, char* text);
+void gui_window_set_title(gui_window* g, char* title);
 
 void gui_window_message(gui_window* g, gui_message* msg);
 
diff --git a/riscos/gui.c b/riscos/gui.c
index d84b02540..61e39021e 100644
--- a/riscos/gui.c
+++ b/riscos/gui.c
@@ -1,16 +1,20 @@
 /**
- * $Id: gui.c,v 1.14 2003/01/07 23:16:04 bursa Exp $
+ * $Id: gui.c,v 1.15 2003/01/11 17:33:31 monkeyson Exp $
  */
 
 #include "netsurf/riscos/font.h"
 #include "netsurf/desktop/gui.h"
 #include "netsurf/render/utils.h"
 #include "netsurf/desktop/netsurf.h"
+#include "oslib/osfile.h"
+#include "oslib/os.h"
 #include "oslib/wimp.h"
 #include "oslib/colourtrans.h"
 #include "netsurf/riscos/theme.h"
+#include "netsurf/utils/log.h"
 #include <string.h>
 #include <stdlib.h>
+#include <math.h>
 
 int gadget_subtract_x;
 int gadget_subtract_y;
@@ -393,6 +397,15 @@ gui_window* create_gui_browser_window(struct browser_window* bw)
   return g;
 }
 
+void gui_window_set_title(gui_window* g, char* title)
+{
+	if (title != NULL)
+		strncpy(g->title, title, 255);
+	else
+		strcpy(g->title, "NetSurf (untitled document)");
+	wimp_force_redraw_title(g->data.browser.window);
+}
+
 void gui_window_destroy(gui_window* g)
 {
   if (g == NULL)
@@ -550,7 +563,7 @@ void ro_gui_window_redraw_box(gui_window* g, struct box * box, signed long x, si
 				(wimp_COLOUR_DARK_GREY << wimp_ICON_FG_COLOUR_SHIFT) |
 				(wimp_COLOUR_WHITE << wimp_ICON_BG_COLOUR_SHIFT);
 			icon.data.indirected_text.text = box->gadget->data.textbox.text;
-			icon.data.indirected_text.size = box->gadget->data.textbox.maxlength;
+			icon.data.indirected_text.size = box->gadget->data.textbox.maxlength + 1;
 			icon.data.indirected_text.validation = " ";
 			fprintf(stderr, "writing GADGET TEXTBOX\n");
 			wimp_plot_icon(&icon);
@@ -1206,6 +1219,211 @@ void ro_gui_w_click(wimp_pointer* pointer)
   }
 }
 
+double calculate_angle(double x, double y)
+{
+	double a;
+	if (x == 0.0)
+	{
+		if (y < 0.0)
+			a = 0.0;
+		else
+			a = M_PI;
+	}
+	else
+	{
+		a = atan(y / x);
+		if (x > 0.0)
+			a += M_PI_2;
+		else
+			a -= M_PI_2;
+	}
+
+	return a;
+}
+
+int anglesDifferent(double a, double b)
+{
+	double c;
+	if (a < 0.0)
+		a += M_2_PI;
+	if (b < 0.0)
+		b += M_2_PI;
+	if (a > M_2_PI)
+		a -= M_2_PI;
+	if (b > M_2_PI)
+		b -= M_2_PI;
+	c = a - b;
+	if (c < 0.0)
+		c += M_2_PI;
+	if (c > M_2_PI)
+		c -= M_2_PI;
+	return (c > M_PI / 6.0);
+}
+
+typedef enum {
+	mouseaction_NONE,
+	mouseaction_BACK, mouseaction_FORWARD,
+	mouseaction_RELOAD, mouseaction_PARENT,
+	mouseaction_NEWWINDOW_OR_LINKFG, mouseaction_DUPLICATE_OR_LINKBG,
+	mouseaction_TOGGLESIZE, mouseaction_ICONISE, mouseaction_CLOSE
+     } mouseaction;
+
+#define STOPPED 2
+#define THRESHOLD 16
+#define DAMPING 1
+
+mouseaction ro_gui_try_mouse_action(void)
+{
+	os_coord start, current, last, offset, moved;
+	double offsetDistance, movedDistance;
+	double angle, oldAngle;
+	bits z;
+	os_coord now;
+	int status;
+	int m;
+	enum {move_NONE, move_LEFT, move_RIGHT, move_UP, move_DOWN} moves[5];
+
+	moves[0] = move_NONE;
+	m = 1;
+
+	os_mouse(&start.x, &start.y, &z, &now);
+	status = 0;
+
+	do
+	{
+		os_mouse(&current.x, &current.y, &z, &now);
+		offset.x = current.x - start.x;
+		offset.y = current.y - start.y;
+		moved.x = current.x - last.x;
+		moved.y = current.y - last.y;
+		offsetDistance = sqrt(offset.x * offset.x + offset.y * offset.y);
+		if (moved.x > 0 || moved.y > 0)
+		movedDistance = sqrt(moved.x * moved.x + moved.y * moved.y);
+		else
+			movedDistance = 0.0;
+		angle = calculate_angle(offset.x, offset.y);
+
+		switch (status)
+		{
+			case 1:
+				if (movedDistance < STOPPED ||
+				    (movedDistance > STOPPED*2.0 && anglesDifferent(angle, oldAngle)))
+				{
+					start.x = current.x;
+					start.y = current.y;
+					status = 0;
+				}
+				break;
+			case 0:
+				if (offsetDistance > THRESHOLD)
+				{
+					if (fabs(offset.x) > fabs(offset.y))
+					{
+						if (fabs(offset.y) < fabs(offset.x) * DAMPING && fabs(offset.x) > THRESHOLD*0.75)
+						{
+							if (offset.x < 0)
+								moves[m] = move_LEFT;
+							else
+								moves[m] = move_RIGHT;
+							if (moves[m] != moves[m-1])
+								m++;
+							start.x = current.x;
+							start.y = current.y;
+							oldAngle = angle;
+							status = 1;
+						}
+					}
+					else if (fabs(offset.y) > fabs(offset.x))
+					{
+						if (fabs(offset.x) < fabs(offset.y) * DAMPING && fabs(offset.y) > THRESHOLD*0.75)
+						{
+							if (offset.y < 0)
+								moves[m] = move_DOWN;
+							else
+								moves[m] = move_UP;
+							if (moves[m] != moves[m-1])
+								m++;
+							start.x = current.x;
+							start.y = current.y;
+							oldAngle = angle;
+							status = 1;
+						}
+					}
+				}
+				break;
+		}
+		last.x = current.x;
+		last.y = current.y;
+		LOG(("m = %d", m));
+
+	} while ((z & 2) != 0 && m < 4);
+	
+	LOG(("MOUSEACTIONS: %d %d %d %d\n",moves[0], moves[1], moves[2], moves[3]));
+	if (m == 2)
+	{
+		switch (moves[1])
+		{
+			case move_LEFT:
+				LOG(("mouse action: go back"));
+				return mouseaction_BACK;
+			case move_RIGHT:
+				LOG(("MOUSE ACTION: GO FORWARD"));
+				return mouseaction_FORWARD;
+			case move_DOWN:
+				LOG(("mouse action: create new window // open link in new window, foreground"));
+				return mouseaction_NEWWINDOW_OR_LINKFG;
+		}
+	}
+
+	if (m == 3)
+	{
+		switch (moves[1])
+		{
+			case move_UP:
+				switch (moves[2])
+				{
+					case move_DOWN:
+						LOG(("mouse action: reload"));
+						return mouseaction_RELOAD;
+					case move_RIGHT:
+						LOG(("mouse action: toggle size"));
+						return mouseaction_TOGGLESIZE;
+					case move_LEFT:
+						LOG(("mouse action: parent directroy"));
+						return mouseaction_PARENT;
+				}
+				break;
+				
+			case move_DOWN:
+				switch (moves[2])
+				{
+					case move_LEFT:
+						LOG(("mouse action: iconise"));
+						return mouseaction_ICONISE;
+					case move_UP:
+						LOG(("mouse action: duplicate // open link in new window, background"));
+						return mouseaction_DUPLICATE_OR_LINKBG;
+					case move_RIGHT:
+						LOG(("mouse action: close"));
+						return mouseaction_CLOSE;
+				}
+				break;
+		}
+	}
+
+	if (m == 4)
+	{
+		if (moves[1] == move_RIGHT && moves[2] == move_LEFT &&
+		    moves[3] == move_RIGHT)
+		{
+			LOG(("mouse action: close window"));
+			return mouseaction_CLOSE;
+		}
+	}
+
+	return mouseaction_NONE;
+}
+
 void ro_gui_window_click(gui_window* g, wimp_pointer* pointer)
 {
   struct browser_action msg;
@@ -1228,7 +1446,34 @@ void ro_gui_window_click(gui_window* g, wimp_pointer* pointer)
 
     if (pointer->buttons == wimp_CLICK_MENU)
     {
-      ro_gui_create_menu((wimp_menu*) &browser_menu, pointer->pos.x - 64, pointer->pos.y, g);
+      /* check for mouse gestures */
+	    mouseaction ma = ro_gui_try_mouse_action();
+      if (ma == mouseaction_NONE)
+      {
+	      os_t now;
+	      int z;
+
+	      os_mouse(&x, &y, &z, &now);
+	      ro_gui_create_menu((wimp_menu*) &browser_menu, x - 64, y, g);
+      }
+      else
+      {
+	      fprintf(stderr, "MOUSE GESTURE %d\n", ma);
+	      switch (ma)
+	      {
+		      case mouseaction_BACK:
+    			browser_window_back(g->data.browser.bw);
+			break;
+
+		      case mouseaction_FORWARD:
+    			browser_window_forward(g->data.browser.bw);
+			break;
+
+			case mouseaction_RELOAD:
+    			browser_window_open_location_historical(g->data.browser.bw, g->data.browser.bw->url);
+			break;
+		}
+      }
     }
     else if (g->data.browser.bw->current_content != NULL)
     {
@@ -1819,14 +2064,15 @@ void gui_edit_textarea(struct browser_window* bw, struct gui_gadget* g)
 {
 	FILE* file;
 
-	system("cdir <Wimp$ScrapDir>.NetSurf");
-	file = fopen("<Wimp$Scrapdir>.NetSurf.TextArea", "w");
+	xosfile_create_dir("<Wimp$ScrapDir>.NetSurf", 77);
+	file = fopen("<Wimp$ScrapDir>/NetSurf/TextArea", "w");
 	if (g->data.textarea.text != 0)
 	  fprintf(file, "%s", g->data.textarea.text);
+	fprintf(stderr, "closing file.\n");
 	fclose(file);
 
-	system("settype <Wimp$ScrapDir>.NetSurf.TextArea FFF");
-	system("filer_run <Wimp$ScrapDir>.NetSurf.TextArea");
+	xosfile_set_type("<Wimp$ScrapDir>.NetSurf.TextArea", osfile_TYPE_TEXT);
+	xos_cli("filer_run <Wimp$ScrapDir>.NetSurf.TextArea");
 }
 
 struct msg_datasave {
@@ -2004,7 +2250,7 @@ void gui_edit_textbox(struct browser_window* bw, struct gui_gadget* g)
 			(wimp_COLOUR_WHITE << wimp_ICON_BG_COLOUR_SHIFT) |
 			(wimp_BUTTON_WRITABLE << wimp_ICON_BUTTON_TYPE_SHIFT);
 	icon.icon.data.indirected_text.text = g->data.textbox.text;
-	icon.icon.data.indirected_text.size = g->data.textbox.maxlength;
+	icon.icon.data.indirected_text.size = g->data.textbox.maxlength + 1;
 	icon.icon.data.indirected_text.validation = " ";
 	current_textbox_i = wimp_create_icon(&icon);
 	current_textbox = g;