GODOT IS OPEN SOURCE

1 files changed, 821 insertions, 0 deletions

diff --git a/scene/gui/line_edit.cpp b/scene/gui/line_edit.cpp
new file mode 100644
index 0000000000..ad1b7fd66b
--- /dev/null
+++ b/scene/gui/line_edit.cpp
@@ -0,0 +1,821 @@
+/*************************************************************************/
+/*  line_edit.cpp                                                        */
+/*************************************************************************/
+/*                       This file is part of:                           */
+/*                           GODOT ENGINE                                */
+/*                    http://www.godotengine.org                         */
+/*************************************************************************/
+/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                 */
+/*                                                                       */
+/* Permission is hereby granted, free of charge, to any person obtaining */
+/* a copy of this software and associated documentation files (the       */
+/* "Software"), to deal in the Software without restriction, including   */
+/* without limitation the rights to use, copy, modify, merge, publish,   */
+/* distribute, sublicense, and/or sell copies of the Software, and to    */
+/* permit persons to whom the Software is furnished to do so, subject to */
+/* the following conditions:                                             */
+/*                                                                       */
+/* The above copyright notice and this permission notice shall be        */
+/* included in all copies or substantial portions of the Software.       */
+/*                                                                       */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
+/*************************************************************************/
+#include "line_edit.h"
+#include "os/keyboard.h"
+#include "os/os.h"
+#include "print_string.h"
+#include "label.h"
+
+void LineEdit::_input_event(InputEvent p_event) {
+
+
+	switch(p_event.type) {
+		
+		case InputEvent::MOUSE_BUTTON: {
+			
+			const InputEventMouseButton &b = p_event.mouse_button;
+
+			if (b.button_index!=1)
+				break;
+			
+			if (b.pressed) {
+				
+				set_cursor_at_pixel_pos(b.x);
+				
+				if (b.doubleclick) {
+					
+					selection.enabled=true;
+					selection.begin=0;
+					selection.end=text.length();
+					selection.doubleclick=true;
+				}
+
+				selection.drag_attempt=false;
+				
+				if ((cursor_pos<selection.begin) || (cursor_pos>selection.end) || !selection.enabled)  {
+					
+					selection_clear();
+					selection.cursor_start=cursor_pos;
+					selection.creating=true;
+				} else if (selection.enabled) {
+
+					selection.drag_attempt=true;
+				}
+				
+				//			if (!editable)
+				//	non_editable_clicked_signal.call();
+				update();
+				
+			} else {
+				
+				if ( (!selection.creating) && (!selection.doubleclick)) {
+					selection_clear();
+				}
+				selection.creating=false;
+				selection.doubleclick=false;
+			}
+			
+			update();				
+		} break;
+		case InputEvent::MOUSE_MOTION: {
+	
+			const InputEventMouseMotion& m=p_event.mouse_motion;
+			
+			if (m.button_mask&1) {
+				
+				if (selection.creating) {
+					set_cursor_at_pixel_pos(m.x);
+					selection_fill_at_cursor();
+				}
+			}
+			
+		} break;
+		case InputEvent::KEY: {
+			
+			const InputEventKey &k =p_event.key;
+			
+			if (!k.pressed)
+				return;
+			unsigned int code  = k.scancode; 
+
+
+			if (k.mod.command) {
+
+				bool handled=true;
+
+				switch (code) {
+
+					case (KEY_X): { // CUT
+
+						if(k.mod.command && editable) {
+							cut_text();
+						}
+
+					} break;
+
+					case (KEY_C): { // COPY
+
+						if(k.mod.command) {
+							copy_text();
+						}
+
+					} break;
+
+					case (KEY_V): { // PASTE
+
+						if(k.mod.command && editable) {
+
+							paste_text();
+						}
+
+					} break;
+
+					case (KEY_Z): { // Simple One level undo
+
+						if( k.mod.command && editable) {
+
+							int old_cursor_pos = cursor_pos;
+							text = undo_text;
+							if(old_cursor_pos > text.length()) {
+								set_cursor_pos(text.length());
+							} else {
+								set_cursor_pos(old_cursor_pos);
+							}
+						}
+
+						emit_signal("text_changed",text);
+						_change_notify("text");
+
+					} break;
+
+					case (KEY_U): { // Delete from start to cursor
+
+						if( k.mod.command && editable) {
+
+							selection_clear();
+							undo_text = text;
+							text = text.substr(cursor_pos,text.length()-cursor_pos);
+							set_cursor_pos(0);
+							emit_signal("text_changed",text);
+							_change_notify("text");
+						}
+
+
+					} break;
+
+					case (KEY_Y): { // PASTE (Yank for unix users)
+
+						if(k.mod.command && editable) {
+
+							paste_text();
+						}
+
+					} break;
+					case (KEY_K): { // Delete from cursor_pos to end
+
+						if(k.mod.command && editable) {
+
+							selection_clear();
+							undo_text = text;
+							text = text.substr(0,cursor_pos);
+							emit_signal("text_changed",text);
+							_change_notify("text");
+						}
+
+					} break;
+					default: { handled=false;}
+				}
+
+				if (handled) {
+					accept_event();
+					return;
+				}
+			}
+
+
+			if (!k.mod.alt && !k.mod.meta && !k.mod.command) {
+
+				bool handled=true;
+				switch (code) {
+
+					case KEY_ENTER:
+					case KEY_RETURN: {
+
+						emit_signal( "text_entered",text );
+						return;
+					} break;
+
+					case KEY_BACKSPACE: {
+
+						if (editable) {
+							undo_text = text;
+							if (selection.enabled)
+								selection_delete();
+							else
+								delete_char();
+						}
+					} break;
+					case KEY_LEFT: {
+						shift_selection_check_pre(k.mod.shift);
+						set_cursor_pos(get_cursor_pos()-1);
+						shift_selection_check_post(k.mod.shift);
+
+					} break;
+					case KEY_RIGHT: {
+
+						shift_selection_check_pre(k.mod.shift);
+						set_cursor_pos(get_cursor_pos()+1);
+						shift_selection_check_post(k.mod.shift);
+					} break;
+					case KEY_DELETE: {
+
+						if (editable) {
+							undo_text = text;
+							if (selection.enabled)
+								selection_delete();
+							else if (cursor_pos<text.length()) {
+
+								set_cursor_pos(get_cursor_pos()+1);
+								delete_char();
+							}
+						}
+
+					} break;
+					case KEY_HOME: {
+
+						shift_selection_check_pre(k.mod.shift);
+						set_cursor_pos(0);
+						shift_selection_check_post(k.mod.shift);
+					} break;
+					case KEY_END: {
+
+						shift_selection_check_pre(k.mod.shift);
+						set_cursor_pos(text.length());
+						shift_selection_check_post(k.mod.shift);
+					} break;
+
+
+					default: {
+
+						if (k.unicode>=32 && k.scancode!=KEY_DELETE) {
+
+							if (editable) {
+								selection_delete();
+								CharType ucodestr[2]={k.unicode,0};
+								append_at_cursor(ucodestr);
+								emit_signal("text_changed",text);
+								_change_notify("text");
+							}
+
+						} else {
+							handled=false;
+						}
+					} break;
+				}
+
+				if (handled)
+					accept_event();
+				else
+					return;
+
+
+				selection.old_shift=k.mod.shift;
+				update();
+
+			}
+
+			
+			return;
+			
+		} break;
+		
+	}
+}
+
+Variant LineEdit::get_drag_data(const Point2& p_point) {
+
+	if (selection.drag_attempt && selection.enabled) {
+		String t = text.substr(selection.begin, selection.end - selection.begin);
+		Label *l = memnew( Label );
+		l->set_text(t);
+		set_drag_preview(l);
+		return 	t;
+	}
+
+	return Variant();
+
+}
+bool LineEdit::can_drop_data(const Point2& p_point,const Variant& p_data) const{
+
+	return p_data.get_type()==Variant::STRING;
+}
+void LineEdit::drop_data(const Point2& p_point,const Variant& p_data){
+
+	if (p_data.get_type()==Variant::STRING) {
+
+		set_cursor_at_pixel_pos(p_point.x);
+		append_at_cursor(p_data);
+	}
+}
+
+
+void LineEdit::_notification(int p_what) {
+	
+	switch(p_what) {
+		
+		case NOTIFICATION_RESIZED: {
+			
+			set_cursor_pos( get_cursor_pos() );
+			
+		} break;
+		case NOTIFICATION_DRAW: {
+		
+			int width,height;
+			
+			Size2 size=get_size();
+			width=size.width;
+			height=size.height;
+			
+			RID ci = get_canvas_item();
+			
+			Ref<StyleBox> style = get_stylebox("normal");
+			if (!is_editable())
+				style=get_stylebox("read_only");
+
+			Ref<Font> font=get_font("font");
+			
+			style->draw( ci, Rect2( Point2(), size ) );
+
+			if (has_focus()) {
+
+				get_stylebox("focus")->draw( ci, Rect2( Point2(), size ) );
+			}
+
+						
+			int ofs=style->get_offset().x;
+			int ofs_max=width-style->get_minimum_size().width;
+			int char_ofs=window_pos;
+			
+			int y_area=height-style->get_minimum_size().height;
+			int y_ofs=style->get_offset().y;
+			
+			int font_ascent=font->get_ascent();
+			
+			Color selection_color=get_color("selection_color");
+			Color font_color=get_color("font_color");
+			Color font_color_selected=get_color("font_color_selected");
+			Color cursor_color=get_color("cursor_color");
+			
+			while(true) {
+				
+		//end of string, break!
+				if (char_ofs>=text.length())
+					break;
+
+				CharType cchar=pass?'*':text[char_ofs];
+				CharType next=pass?'*':text[char_ofs+1];
+				int char_width=font->get_char_size( cchar,next ).width;
+								
+		// end of widget, break!
+				if ( (ofs+char_width) > ofs_max )
+					break;
+				
+				
+				bool selected=selection.enabled && char_ofs>=selection.begin && char_ofs<selection.end;
+				
+				if (selected)
+					VisualServer::get_singleton()->canvas_item_add_rect(ci,Rect2( Point2( ofs , y_ofs ),Size2( char_width, y_area )),selection_color);
+				
+
+				font->draw_char(ci,Point2( ofs , y_ofs+font_ascent ), cchar, next,selected?font_color_selected:font_color );
+				
+				if (char_ofs==cursor_pos && has_focus())
+					VisualServer::get_singleton()->canvas_item_add_rect(ci, Rect2(
+						Point2( ofs , y_ofs ), Size2( 1, y_area ) ), cursor_color );
+				
+				ofs+=char_width;
+				char_ofs++;
+			}
+
+			if (char_ofs==cursor_pos && has_focus()) //may be at the end
+				VisualServer::get_singleton()->canvas_item_add_rect(ci, Rect2(
+					Point2( ofs , y_ofs ), Size2( 1, y_area ) ), cursor_color );		
+			
+		} break;
+		case NOTIFICATION_FOCUS_ENTER: {
+
+			if (OS::get_singleton()->has_virtual_keyboard())
+				OS::get_singleton()->show_virtual_keyboard(get_text(),get_global_rect());
+
+		} break;
+		case NOTIFICATION_FOCUS_EXIT: {
+
+			if (OS::get_singleton()->has_virtual_keyboard())
+				OS::get_singleton()->hide_virtual_keyboard();
+
+		} break;
+
+	}
+}
+
+void LineEdit::copy_text() {
+	
+	if(selection.enabled) {
+		
+		OS::get_singleton()->set_clipboard(text.substr(selection.begin, selection.end - selection.begin));
+	}
+}
+
+void LineEdit::cut_text() {
+	
+	if(selection.enabled) {
+		undo_text = text;
+		OS::get_singleton()->set_clipboard(text.substr(selection.begin, selection.end - selection.begin));
+		selection_delete();
+	}
+}
+
+void LineEdit::paste_text() {
+	
+	String paste_buffer = OS::get_singleton()->get_clipboard();
+	
+	if(paste_buffer != "") {
+
+		if(selection.enabled) selection_delete();
+		append_at_cursor(paste_buffer);
+
+		emit_signal("text_changed",text);
+		_change_notify("text");
+	}
+
+	
+
+}
+
+void LineEdit::shift_selection_check_pre(bool p_shift) {
+	
+	if (!selection.old_shift && p_shift)  {
+		selection.cursor_start=cursor_pos;
+	}
+	if (!p_shift)
+		selection_clear();
+	
+}
+
+void LineEdit::shift_selection_check_post(bool p_shift) {
+	
+	if (p_shift)
+		selection_fill_at_cursor();
+}
+
+void LineEdit::set_cursor_at_pixel_pos(int p_x) {
+	
+	int ofs=window_pos;
+	int pixel_ofs=get_stylebox("normal")->get_offset().x;
+	Ref<Font> font=get_font("font");
+
+	while (ofs<text.length()) {
+		
+		int char_w=font->get_char_size( text[ofs] ).width;
+		pixel_ofs+=char_w;
+		
+		if (pixel_ofs > p_x) { //found what we look for
+			
+			
+			if ( (pixel_ofs-p_x) < (char_w >> 1 ) ) {
+				
+				ofs+=1;
+			}
+			
+			break;
+		}
+		
+		
+		ofs++;
+	}
+	
+	set_cursor_pos( ofs );
+	
+	/*
+	int new_cursor_pos=p_x;
+	int charwidth=draw_area->get_font_char_width(' ',0);
+	new_cursor_pos=( ( (new_cursor_pos-2)+ (charwidth/2) ) /charwidth );
+	if (new_cursor_pos>(int)text.length()) new_cursor_pos=text.length();
+	set_cursor_pos(window_pos+new_cursor_pos); */
+}
+
+
+void LineEdit::delete_char() {
+	
+	if ((text.length()<=0) || (cursor_pos==0)) return;
+	
+	
+	text.erase( cursor_pos-1, 1 );
+	
+	set_cursor_pos(get_cursor_pos()-1);
+	
+	if (cursor_pos==window_pos) {
+		
+	//	set_window_pos(cursor_pos-get_window_length());
+	}
+	
+	emit_signal("text_changed",text);
+	_change_notify("text");
+}
+
+void LineEdit::set_text(String p_text) {
+	
+	clear_internal();
+	append_at_cursor(p_text);
+	update();
+	cursor_pos=0;
+	window_pos=0;
+}
+
+void LineEdit::clear() {
+	
+	clear_internal();
+}
+
+String LineEdit::get_text() const {
+	
+	return text;
+}
+
+void LineEdit::set_cursor_pos(int p_pos) {
+	
+	if (p_pos>(int)text.length())
+		p_pos=text.length();
+	
+	if(p_pos<0)
+		p_pos=0;
+	
+	
+	
+	cursor_pos=p_pos;
+	
+//	if (cursor_pos>(window_pos+get_window_length())) {
+//	set_window_pos(cursor_pos-get_window_lengt//h());
+//	}
+	
+	if (!is_inside_scene()) {
+		
+		window_pos=cursor_pos;
+		return;
+	}
+	
+	Ref<StyleBox> style = get_stylebox("normal");
+	Ref<Font> font=get_font("font");
+	
+	if (cursor_pos<window_pos) {
+		/* Adjust window if cursor goes too much to the left */
+		set_window_pos(cursor_pos);
+	} else if (cursor_pos>window_pos) {
+		/* Adjust window if cursor goes too much to the right */
+		int window_width=get_size().width-style->get_minimum_size().width;
+		
+		if (window_width<0)
+			return;
+		int width_to_cursor=0;
+		int wp=window_pos;
+		
+		for (int i=window_pos;i<cursor_pos;i++)
+			width_to_cursor+=font->get_char_size( text[i] ).width;
+		
+		while(width_to_cursor>=window_width && wp<text.length()) {			
+			
+			width_to_cursor-=font->get_char_size( text[ wp ] ).width;
+			wp++;
+		}
+		
+		if (wp!=window_pos)
+			set_window_pos( wp );
+		
+	}
+	update();
+}
+
+int LineEdit::get_cursor_pos()  const {
+	
+	return cursor_pos;
+}
+
+void LineEdit::set_window_pos(int p_pos) {
+	
+	window_pos=p_pos;
+	if (window_pos<0) window_pos=0;
+}
+
+void LineEdit::append_at_cursor(String p_text) {
+	
+	
+	if ( ( max_length <= 0 ) || (text.length()+p_text.length() <= max_length)) {
+		
+		undo_text = text;
+		String pre = text.substr( 0, cursor_pos );
+		String post = text.substr( cursor_pos, text.length()-cursor_pos );
+		text=pre+p_text+post;
+		set_cursor_pos(cursor_pos+p_text.length());
+		
+	}
+	
+}
+
+void LineEdit::clear_internal() {
+	
+	cursor_pos=0;
+	window_pos=0;
+	undo_text="";
+	text="";
+	update();
+}
+
+Size2 LineEdit::get_minimum_size() const {
+	
+	Ref<StyleBox> style = get_stylebox("normal");
+	Ref<Font> font=get_font("font");
+	
+	Size2 min=style->get_minimum_size();
+	min.height+=font->get_height();
+	min.width+=get_constant("minimum_spaces")*font->get_char_size(' ').x;
+	
+	return min;
+}
+
+/* selection */
+
+void LineEdit::selection_clear() {
+	
+	selection.begin=0;
+	selection.end=0;
+	selection.cursor_start=0;
+	selection.enabled=false;
+	selection.creating=false;
+	selection.old_shift=false;
+	selection.doubleclick=false;
+	update();
+}
+
+
+void LineEdit::selection_delete() {
+	
+	if (selection.enabled) {
+		
+		undo_text = text;
+		text.erase(selection.begin,selection.end-selection.begin);
+		
+		if (cursor_pos>=text.length()) {
+			
+			cursor_pos=text.length();
+		}
+		if (window_pos>cursor_pos) {
+			
+			window_pos=cursor_pos;
+		}
+		
+		emit_signal("text_changed",text);
+		_change_notify("text");
+	};
+	
+	selection_clear();
+}
+
+void LineEdit::set_max_length(int p_max_length) {
+	
+	ERR_FAIL_COND(p_max_length<0);
+	max_length = p_max_length;
+	set_text(text);
+}
+
+int LineEdit::get_max_length() const {
+	
+	return max_length;
+}
+
+void LineEdit::selection_fill_at_cursor() {
+	
+	int aux;
+	
+	selection.begin=cursor_pos;
+	selection.end=selection.cursor_start;
+	
+	if (selection.end<selection.begin) {
+		aux=selection.end;
+		selection.end=selection.begin;
+		selection.begin=aux;
+	}
+	
+	selection.enabled=(selection.begin!=selection.end);
+}
+
+void LineEdit::select_all() {
+	
+	if (!text.length())
+		return;
+	
+	selection.begin=0;
+	selection.end=text.length();
+	selection.enabled=true;
+	update();
+	
+}
+void LineEdit::set_editable(bool p_editable) {
+	
+	editable=p_editable;
+	update();
+}
+
+bool LineEdit::is_editable() const {
+	
+	return editable;
+}
+
+void LineEdit::set_secret(bool p_secret) {
+	
+	pass=p_secret;
+	update();
+}
+bool LineEdit::is_secret() const {
+	
+	return pass;
+}
+
+void LineEdit::select(int p_from, int p_to) {
+
+	int len = text.length();
+	if (p_from<0)
+		p_from=0;
+	if (p_from>len)
+		p_from=len;
+	if (p_to<0 || p_to>len)
+		p_to=len;
+
+	if (p_from>=p_to)
+		return;
+
+	selection.enabled=true;
+	selection.begin=p_from;
+	selection.end=p_to;
+	selection.creating=false;
+	selection.old_shift=false;
+	selection.doubleclick=false;
+	update();
+}
+
+
+void LineEdit::_bind_methods() {
+	
+
+	ObjectTypeDB::bind_method(_MD("_input_event"),&LineEdit::_input_event);
+	ObjectTypeDB::bind_method(_MD("clear"),&LineEdit::clear);	
+	ObjectTypeDB::bind_method(_MD("select_all"),&LineEdit::select_all);	
+	ObjectTypeDB::bind_method(_MD("set_text","text"),&LineEdit::set_text);
+	ObjectTypeDB::bind_method(_MD("get_text"),&LineEdit::get_text);	
+	ObjectTypeDB::bind_method(_MD("set_cursor_pos","pos"),&LineEdit::set_cursor_pos);
+	ObjectTypeDB::bind_method(_MD("get_cursor_pos"),&LineEdit::get_cursor_pos);	
+	ObjectTypeDB::bind_method(_MD("set_max_length","chars"),&LineEdit::set_max_length);
+	ObjectTypeDB::bind_method(_MD("get_max_length"),&LineEdit::get_max_length);	
+	ObjectTypeDB::bind_method(_MD("append_at_cursor","text"),&LineEdit::append_at_cursor);
+	ObjectTypeDB::bind_method(_MD("set_editable","enabled"),&LineEdit::set_editable);
+	ObjectTypeDB::bind_method(_MD("is_editable"),&LineEdit::is_editable);	
+	ObjectTypeDB::bind_method(_MD("set_secret","enabled"),&LineEdit::set_secret);
+	ObjectTypeDB::bind_method(_MD("is_secret"),&LineEdit::is_secret);	
+	ObjectTypeDB::bind_method(_MD("select","from","to"),&LineEdit::is_secret,DEFVAL(0),DEFVAL(-1));
+
+	ADD_SIGNAL( MethodInfo("text_changed", PropertyInfo( Variant::STRING, "text" )) );
+	ADD_SIGNAL( MethodInfo("text_entered", PropertyInfo( Variant::STRING, "text" )) );
+
+	ADD_PROPERTY( PropertyInfo( Variant::STRING, "text" ), _SCS("set_text"),_SCS("get_text") );
+	ADD_PROPERTY( PropertyInfo( Variant::INT, "max_length" ), _SCS("set_max_length"),_SCS("get_max_length") );
+	ADD_PROPERTY( PropertyInfo( Variant::BOOL, "editable" ), _SCS("set_editable"),_SCS("is_editable") );
+	ADD_PROPERTY( PropertyInfo( Variant::BOOL, "secret" ), _SCS("set_secret"),_SCS("is_secret") );
+
+}
+
+LineEdit::LineEdit() {
+	
+	cursor_pos=0;
+	window_pos=0;
+	max_length = 0;
+	pass=false;
+	
+	selection_clear();
+	set_focus_mode( FOCUS_ALL );
+	editable=true;
+	set_default_cursor_shape(CURSOR_IBEAM);
+	set_stop_mouse(true);
+		
+	
+}
+
+LineEdit::~LineEdit() {
+	
+	
+}
+