X-Git-Url: https://git.lyx.org/gitweb/?a=blobdiff_plain;f=src%2Fscreen.C;h=66df051f80cfdf48e1d93db51512269a8203a9cd;hb=98c966c64594611e469313314abd1e59524adb4a;hp=16b64314e270135cab42841a2db5ed0c20261fb8;hpb=6bba977f42b0cde753ac2ffd26f3f9c6b32ba0b6;p=lyx.git

diff --git a/src/screen.C b/src/screen.C
index 16b64314e2..66df051f80 100644
--- a/src/screen.C
+++ b/src/screen.C
@@ -1,8 +1,8 @@
 /* This file is part of
-* ====================================================== 
-* 
+* ======================================================
+*
 *           LyX, The Document Processor
-* 	 
+*
 *	    Copyright 1995 Matthias Ettrich
 *           Copyright 1995-1998 The LyX Team
 *
@@ -22,34 +22,39 @@
 #include "Painter.h"
 #include "WorkArea.h"
 #include "buffer.h"
+#include "BufferView.h"
 #include "font.h"
+#include "insets/insettext.h"
+#include "ColorHandler.h"
+#include "language.h"
 
 using std::max;
 using std::min;
 
-static
+namespace {
+
 GC createGC()
 {
 	XGCValues val;
-	val.foreground = BlackPixel(fl_display, 
-				    DefaultScreen(fl_display));
-	
-	val.function=GXcopy;
+	val.foreground = BlackPixel(fl_get_display(),
+				    DefaultScreen(fl_get_display()));
+
+	val.function = GXcopy;
 	val.graphics_exposures = false;
 	val.line_style = LineSolid;
 	val.line_width = 0;
-	return XCreateGC(fl_display, RootWindow(fl_display, 0), 
+	return XCreateGC(fl_get_display(), RootWindow(fl_get_display(), 0),
 			 GCForeground | GCFunction | GCGraphicsExposures
 			 | GCLineWidth | GCLineStyle , &val);
 }
 
+} // namespace anon
+
 
 // Constructor
-LyXScreen::LyXScreen(WorkArea & o, LyXText * text_ptr)
-	: owner(o), text(text_ptr)
+LyXScreen::LyXScreen(WorkArea & o)
+	: owner(o), force_clear(true)
 {
-	first = 0;
-   
 	// the cursor isnt yet visible
 	cursor_visible = false;
 	cursor_pixmap = 0;
@@ -63,20 +68,39 @@ LyXScreen::LyXScreen(WorkArea & o, LyXText * text_ptr)
 }
 
 
-void LyXScreen::Redraw()
+LyXScreen::~LyXScreen()
+{
+	XFreeGC(fl_get_display(), gc_copy);
+}
+
+
+void LyXScreen::setCursorColor()
+{
+	if (!lyxColorHandler.get()) return;
+
+	GC gc = lyxColorHandler->getGCForeground(LColor::cursor);
+
+	XGCValues val;
+	XGetGCValues(fl_get_display(),
+		     gc, GCForeground, &val);
+	XChangeGC(fl_get_display(), gc_copy, GCForeground, &val);
+}
+
+
+void LyXScreen::redraw(LyXText * text, BufferView * bv)
 {
-	DrawFromTo(0, owner.height());
+	drawFromTo(text, bv, 0, owner.height(), 0, 0, text == bv->text);
 	expose(0, 0, owner.workWidth(), owner.height());
 	if (cursor_visible) {
 		cursor_visible = false;
-		ShowCursor();
+		bv->showCursor();
 	}
 }
 
 
 void LyXScreen::expose(int x, int y, int exp_width, int exp_height)
 {
-	XCopyArea(fl_display,
+	XCopyArea(fl_get_display(),
 		  owner.getPixmap(),
 		  owner.getWin(),
 		  gc_copy,
@@ -87,25 +111,40 @@ void LyXScreen::expose(int x, int y, int exp_width, int exp_height)
 }
 
 
-void LyXScreen::DrawFromTo(int y1, int y2)
+void LyXScreen::drawFromTo(LyXText * text, BufferView * bv,
+			   int y1, int y2, int y_offset, int x_offset,
+			   bool internal)
 {
-	long y_text = first + y1;
-   
-	// get the first needed row 
-	Row * row = text->GetRowNearY(y_text);
+	int y_text = text->first_y + y1;
+
+	// get the first needed row
+	Row * row = text->getRowNearY(y_text);
 	// y_text is now the real beginning of the row
-   
-	long y = y_text - first;
+
+	int y = y_text - text->first_y;
 	// y1 is now the real beginning of row on the screen
-	
+
 	while (row != 0 && y < y2) {
-		text->GetVisibleRow(owner.owner(), y, 0, row, y + first);
+		LyXText::text_status st = text->status();
+		text->getVisibleRow(bv, y + y_offset,
+				    x_offset, row, y + text->first_y);
+		internal = internal && (st != LyXText::CHANGED_IN_DRAW);
+		while (internal && text->status() == LyXText::CHANGED_IN_DRAW) {
+			if (text->fullRebreak(bv)) {
+				st = LyXText::NEED_MORE_REFRESH;
+				text->setCursor(bv, text->cursor.par(), text->cursor.pos());
+			}
+			text->status(bv, st);
+			text->getVisibleRow(bv, y + y_offset,
+					    x_offset, row, y + text->first_y);
+		}
 		y += row->height();
 		row = row->next();
 	}
-   
+	force_clear = false;
+
 	// maybe we have to clear the screen at the bottom
-	if (y < y2) {
+	if ((y < y2) && text->bv_owner) {
 		owner.getPainter().fillRectangle(0, y,
 						 owner.workWidth(),
 						 y2 - y,
@@ -114,84 +153,100 @@ void LyXScreen::DrawFromTo(int y1, int y2)
 }
 
 
-void LyXScreen::DrawOneRow(Row * row, long y_text)
+void LyXScreen::drawOneRow(LyXText * text, BufferView * bv, Row * row,
+			   int y_text, int y_offset, int x_offset)
 {
-	long y = y_text - first;
-      
-	if (y + row->height() > 0
-	    && y - row->height() <= long(owner.height())) {
+	int const y = y_text - text->first_y + y_offset;
+
+	if (((y + row->height()) > 0) &&
+	    ((y - row->height()) <= static_cast<int>(owner.height()))) {
 		// ok there is something visible
-		text->GetVisibleRow(owner.owner(), y, 0, row, y + first);
+#if 0
+		LyXText::text_status st = bv->text->status();
+		do {
+			bv->text->status(bv, st);
+			text->getVisibleRow(bv, y, x_offset, row,
+					    y + text->first_y);
+		} while (!text->inset_owner &&
+			 text->status() == LyXText::CHANGED_IN_DRAW);
+		bv->text->status(bv, st);
+#else
+		text->getVisibleRow(bv, y, x_offset, row, y + text->first_y);
+#endif
 	}
+	force_clear = false;
 }
 
 
 /* draws the screen, starting with textposition y. uses as much already
-* printed pixels as possible */
-void LyXScreen::Draw(unsigned long y)
+ * printed pixels as possible */
+void LyXScreen::draw(LyXText * text, BufferView * bv, unsigned int y)
 {
-	if (cursor_visible) HideCursor();
+	if (cursor_visible) hideCursor();
 
-	unsigned long old_first = first;
-	first = y;
+	int const old_first = text->first_y;
+	bool internal = (text == bv->text);
+	text->first_y = y;
 
 	// is any optimiziation possible?
 	if ((y - old_first) < owner.height()
-	    && (old_first - y) < owner.height()) {
-		if (first < old_first) {
-			DrawFromTo(0, old_first - first);
-			XCopyArea (fl_display,
+	    && (old_first - y) < owner.height())
+	{
+		if (text->first_y < old_first) {
+			drawFromTo(text, bv, 0,
+				   old_first - text->first_y, 0, 0, internal);
+			XCopyArea (fl_get_display(),
 				   owner.getWin(),
 				   owner.getWin(),
 				   gc_copy,
 				   owner.xpos(),
 				   owner.ypos(),
 				   owner.workWidth(),
-				   owner.height() - old_first + first,
+				   owner.height() - old_first + text->first_y,
 				   owner.xpos(),
-				   owner.ypos() + old_first - first
+				   owner.ypos() + old_first - text->first_y
 				);
 			// expose the area drawn
 			expose(0, 0,
 			       owner.workWidth(),
-			       old_first - first);
+			       old_first - text->first_y);
 		} else  {
-			DrawFromTo(
-				owner.height() + old_first - first,
-				   owner.height());
-			XCopyArea (fl_display,
+			drawFromTo(text, bv,
+				   owner.height() + old_first - text->first_y,
+				   owner.height(), 0, 0, internal);
+			XCopyArea (fl_get_display(),
 				   owner.getWin(),
 				   owner.getWin(),
 				   gc_copy,
 				   owner.xpos(),
-				   owner.ypos() + first - old_first,
+				   owner.ypos() + text->first_y - old_first,
 				   owner.workWidth(),
-				   owner.height() + old_first - first,
+				   owner.height() + old_first - text->first_y,
 				   owner.xpos(),
 				   owner.ypos());
 			// expose the area drawn
-			expose(0, owner.height() + old_first - first,
-			       owner.workWidth(), first - old_first);
+			expose(0, owner.height() + old_first - text->first_y,
+			       owner.workWidth(), text->first_y - old_first);
 		}
 	} else {
-		// make a dumb new-draw 
-		DrawFromTo(0, owner.height());
+		// make a dumb new-draw
+		drawFromTo(text, bv, 0, owner.height(), 0, 0, internal);
 		expose(0, 0, owner.workWidth(), owner.height());
 	}
 }
 
 
-void LyXScreen::ShowCursor()
+void LyXScreen::showCursor(LyXText const * text, BufferView const * bv)
 {
 	if (!cursor_visible) {
 		Cursor_Shape shape = BAR_SHAPE;
 		if (text->real_current_font.language() !=
-		    owner.owner()->buffer()->params.language_info
+		    bv->buffer()->params.language
 		    || text->real_current_font.isVisibleRightToLeft()
-		    != owner.owner()->buffer()->params.language_info->RightToLeft())
+		    != bv->buffer()->params.language->RightToLeft())
 			shape = (text->real_current_font.isVisibleRightToLeft())
 				? REVERSED_L_SHAPE : L_SHAPE;
-		ShowManualCursor(text->cursor.x(), text->cursor.y(),
+		showManualCursor(text, text->cursor.x(), text->cursor.y(),
 				 lyxfont::maxAscent(text->real_current_font),
 				 lyxfont::maxDescent(text->real_current_font),
 				 shape);
@@ -199,50 +254,53 @@ void LyXScreen::ShowCursor()
 }
 
 
-/* returns true if first has changed, otherwise false */ 
-bool LyXScreen::FitManualCursor(long /*x*/, long y, int asc, int desc)
+/* returns true if first has changed, otherwise false */
+bool LyXScreen::fitManualCursor(LyXText * text, BufferView * bv,
+				int /*x*/, int y, int asc, int desc)
 {
-	long newtop = first;
-  
-	if (y + desc - first >= owner.height())
+	int newtop = text->first_y;
+
+	if (y + desc - text->first_y >= static_cast<int>(owner.height()))
 		newtop = y - 3 * owner.height() / 4;  // the scroll region must be so big!!
-	else if (y - asc < long(first)
-		&& first > 0) {
+	else if (y - asc < text->first_y
+		&& text->first_y > 0) {
 		newtop = y - owner.height() / 4;
 	}
 
-	newtop = max(newtop, 0L); // can newtop ever be < 0? (Lgb)
-  
-	if (newtop != long(first)) {
-		Draw(newtop);
-		first = newtop;
+	newtop = max(newtop, 0); // can newtop ever be < 0? (Lgb)
+
+	if (newtop != text->first_y) {
+		draw(text, bv, newtop);
+		text->first_y = newtop;
 		return true;
 	}
 	return false;
 }
 
 
-void LyXScreen::ShowManualCursor(long x, long y, int asc, int desc,
-				  Cursor_Shape shape)
+void LyXScreen::showManualCursor(LyXText const * text, int x, int y,
+				 int asc, int desc, Cursor_Shape shape)
 {
-	unsigned long y1 = max(y - first - asc, 0UL);
-	typedef unsigned long ulong;
-	
-	unsigned long y2 = min(y - first + desc, ulong(owner.height()));
+	// Update the cursor color.
+	setCursorColor();
+
+	int const y1 = max(y - text->first_y - asc, 0);
+	int const y_tmp = min(y - text->first_y + desc,
+			      static_cast<int>(owner.height()));
 
 	// Secure against very strange situations
-	y2 = max(y2, y1);
-	
-	if (cursor_pixmap){
-		XFreePixmap(fl_display, cursor_pixmap);
+	int const y2 = max(y_tmp, y1);
+
+	if (cursor_pixmap) {
+		XFreePixmap(fl_get_display(), cursor_pixmap);
 		cursor_pixmap = 0;
 	}
 
-	if (y2 > 0 && y1 < owner.height()) {
+	if (y2 > 0 && y1 < int(owner.height())) {
 		cursor_pixmap_h = y2 - y1 + 1;
 		cursor_pixmap_y = y1;
 
-		switch(shape) {
+		switch (shape) {
 		case BAR_SHAPE:
 			cursor_pixmap_w = 1;
 			cursor_pixmap_x = x;
@@ -257,13 +315,13 @@ void LyXScreen::ShowManualCursor(long x, long y, int asc, int desc,
 			break;
 		}
 
-		cursor_pixmap = 
-			XCreatePixmap (fl_display,
+		cursor_pixmap =
+			XCreatePixmap (fl_get_display(),
 				       fl_root,
 				       cursor_pixmap_w,
 				       cursor_pixmap_h,
 				       fl_get_visual_depth());
-		XCopyArea (fl_display,
+		XCopyArea (fl_get_display(),
 			   owner.getWin(),
 			   cursor_pixmap,
 			   gc_copy,
@@ -272,20 +330,20 @@ void LyXScreen::ShowManualCursor(long x, long y, int asc, int desc,
 			   cursor_pixmap_w,
 			   cursor_pixmap_h,
 			   0, 0);
-		XDrawLine(fl_display,
+		XDrawLine(fl_get_display(),
 			  owner.getWin(),
 			  gc_copy,
 			  x + owner.xpos(),
 			  y1 + owner.ypos(),
 			  x + owner.xpos(),
 			  y2 + owner.ypos());
-		switch(shape) {
+		switch (shape) {
 		case BAR_SHAPE:
 			break;
 		case L_SHAPE:
 		case REVERSED_L_SHAPE:
-			int rectangle_h = (cursor_pixmap_h+10)/20;
-			XFillRectangle(fl_display,
+			int const rectangle_h = (cursor_pixmap_h + 10) / 20;
+			XFillRectangle(fl_get_display(),
 				       owner.getWin(),
 				       gc_copy,
 				       cursor_pixmap_x + owner.xpos(),
@@ -299,16 +357,16 @@ void LyXScreen::ShowManualCursor(long x, long y, int asc, int desc,
 }
 
 
-void LyXScreen::HideCursor()
+void LyXScreen::hideCursor()
 {
 	if (!cursor_visible) return;
 
-	if (cursor_pixmap){
-		XCopyArea (fl_display, 
+	if (cursor_pixmap) {
+		XCopyArea (fl_get_display(),
 			   cursor_pixmap,
 			   owner.getWin(),
 			   gc_copy,
-			   0, 0, 
+			   0, 0,
 			   cursor_pixmap_w, cursor_pixmap_h,
 			   cursor_pixmap_x + owner.xpos(),
 			   cursor_pixmap_y + owner.ypos());
@@ -317,85 +375,104 @@ void LyXScreen::HideCursor()
 }
 
 
-void LyXScreen::CursorToggle()
+void LyXScreen::cursorToggle(BufferView * bv) const
 {
 	if (cursor_visible)
-		HideCursor();
+		bv->hideCursor();
 	else
-		ShowCursor();
+		bv->showCursor();
 }
 
 
-/* returns a new top so that the cursor is visible */ 
-unsigned long LyXScreen::TopCursorVisible()
+/* returns a new top so that the cursor is visible */
+unsigned int LyXScreen::topCursorVisible(LyXText const * text)
 {
-	long newtop = first;
-
-	if (text->cursor.y()
-	    - text->cursor.row()->baseline()
-	    + text->cursor.row()->height()
-	    - first >= owner.height()) {
-		if (text->cursor.row()->height() < owner.height()
-		    && text->cursor.row()->height() > owner.height() / 4)
+	int newtop = text->first_y;
+
+	Row * row = text->cursor.row();
+
+	// Is this a hack? Yes, probably... (Lgb)
+	if (!row)
+		return max(newtop, 0);
+
+	if (text->cursor.y() - row->baseline() + row->height()
+	    - text->first_y >= owner.height()) {
+		if (row->height() < owner.height()
+		    && row->height() > owner.height() / 4) {
 			newtop = text->cursor.y()
-				+ text->cursor.row()->height()
-				- text->cursor.row()->baseline() - owner.height();
-		else
+				+ row->height()
+				- row->baseline() - owner.height();
+		} else {
+			// scroll down
 			newtop = text->cursor.y()
-				- 3 * owner.height() / 4;   /* the scroll region must be so big!! */
-	} else if (text->cursor.y() - text->cursor.row()->baseline() < first
-		   && first > 0) {
-		if (text->cursor.row()->height() < owner.height()
-		    && text->cursor.row()->height() > owner.height() / 4)
-			newtop = text->cursor.y() - text->cursor.row()->baseline();
-		else {
-			newtop = text->cursor.y() - owner.height() / 4;
-			newtop = min(newtop, long(first));
+				- owner.height() / 2;   /* the scroll region must be so big!! */
+		}
+
+	} else if (static_cast<int>((text->cursor.y()) - row->baseline()) <
+		   text->first_y && text->first_y > 0) {
+		if (row->height() < owner.height()
+		    && row->height() > owner.height() / 4) {
+			newtop = text->cursor.y() - row->baseline();
+		} else {
+			// scroll up
+			newtop = text->cursor.y() - owner.height() / 2;
+			newtop = min(newtop, text->first_y);
 		}
 	}
 
-	newtop = max(newtop, 0L);
+	newtop = max(newtop, 0);
 
 	return newtop;
 }
 
 
 /* scrolls the screen so that the cursor is visible, if necessary.
-* returns true if a change was made, otherwise false */ 
-bool LyXScreen::FitCursor()
+* returns true if a change was made, otherwise false */
+bool LyXScreen::fitCursor(LyXText * text, BufferView * bv)
 {
 	// Is a change necessary?
-	unsigned long newtop = TopCursorVisible();
-	bool result = (newtop != first);
+	int const newtop = topCursorVisible(text);
+	bool const result = (newtop != text->first_y);
 	if (result)
-		Draw(newtop);
+		draw(text, bv, newtop);
 	return result;
 }
 
-   
-void LyXScreen::Update()
+
+void LyXScreen::update(LyXText * text, BufferView * bv,
+		       int y_offset, int x_offset)
 {
-	switch(text->status) {
+	switch (text->status()) {
 	case LyXText::NEED_MORE_REFRESH:
 	{
-		long y = max(text->refresh_y - long(first), 0L);
-		
-		DrawFromTo(y, owner.height());
+		int const y = max(int(text->refresh_y - text->first_y), 0);
+		drawFromTo(text, bv, y, owner.height(), y_offset, x_offset);
 		text->refresh_y = 0;
-		text->status = LyXText::UNCHANGED;
-		expose(0, y,
-		       owner.workWidth(), owner.height() - y);
+		// otherwise this is called ONLY from BufferView_pimpl(update)
+		// or we should see to set this flag accordingly
+		if (text != bv->text)
+			text->status(bv, LyXText::UNCHANGED);
+		expose(0, y, owner.workWidth(), owner.height() - y);
 	}
 	break;
 	case LyXText::NEED_VERY_LITTLE_REFRESH:
 	{
 		// ok I will update the current cursor row
-		DrawOneRow(text->refresh_row, text->refresh_y);
-		text->status = LyXText::UNCHANGED;
-		expose(0, text->refresh_y - first,
-		       owner.workWidth(), text->refresh_row->height());
+		drawOneRow(text, bv, text->refresh_row, text->refresh_y,
+			   y_offset, x_offset);
+		// this because if we had a major update the refresh_row could
+		// have been set to 0!
+		if (text->refresh_row) {
+			// otherwise this is called ONLY from BufferView_pimpl(update)
+			// or we should see to set this flag accordingly
+			if (text != bv->text)
+				text->status(bv, LyXText::UNCHANGED);
+			expose(0, text->refresh_y - text->first_y + y_offset,
+				   owner.workWidth(), text->refresh_row->height());
+		}
 	}
 	break;
+	case LyXText::CHANGED_IN_DRAW: // just to remove the warning
 	case LyXText::UNCHANGED:
 		// Nothing needs done
 		break;
@@ -403,46 +480,57 @@ void LyXScreen::Update()
 }
 
 
-void LyXScreen::ToggleSelection(bool kill_selection)
+void LyXScreen::toggleSelection(LyXText * text, BufferView * bv,
+				bool kill_selection,
+				int y_offset, int x_offset)
 {
 	// only if there is a selection
-	if (!text->selection) return;
-
-	long bottom = min(max(text->sel_end_cursor.y()
-			      - text->sel_end_cursor.row()->baseline()
-			      + text->sel_end_cursor.row()->height(), first),
-			  first + owner.height());
-	long top = min(max(text->sel_start_cursor.y()
-			   - text->sel_start_cursor.row()->baseline(), first),
-		       first + owner.height());
+	if (!text->selection.set()) return;
+
+	int const bottom = min(
+		max(static_cast<int>(text->selection.end.y()
+				     - text->selection.end.row()->baseline()
+				     + text->selection.end.row()->height()),
+		    text->first_y),
+		static_cast<int>(text->first_y + owner.height()));
+	int const top = min(
+		max(static_cast<int>(text->selection.start.y() -
+				     text->selection.start.row()->baseline()),
+		    text->first_y),
+		static_cast<int>(text->first_y + owner.height()));
 
 	if (kill_selection)
-		text->selection = 0;
-	DrawFromTo(top - first, bottom - first);
-	expose(0, top - first,
+		text->selection.set(false);
+	drawFromTo(text, bv, top - text->first_y, bottom - text->first_y,
+		   y_offset, x_offset);
+	expose(0, top - text->first_y,
 	       owner.workWidth(),
-	       bottom - first - (top - first));
+	       bottom - text->first_y - (top - text->first_y));
 }
-  
-   
-void LyXScreen::ToggleToggle()
+
+
+void LyXScreen::toggleToggle(LyXText * text, BufferView * bv,
+			     int y_offset, int x_offset)
 {
 	if (text->toggle_cursor.par() == text->toggle_end_cursor.par()
 	    && text->toggle_cursor.pos() == text->toggle_end_cursor.pos())
 		return;
-	
-	long top = text->toggle_cursor.y()
+
+	int const top_tmp = text->toggle_cursor.y()
 		- text->toggle_cursor.row()->baseline();
-	long bottom = text->toggle_end_cursor.y()
-		- text->toggle_end_cursor.row()->baseline() 
+	int const bottom_tmp = text->toggle_end_cursor.y()
+		- text->toggle_end_cursor.row()->baseline()
 		+ text->toggle_end_cursor.row()->height();
+
+	int const offset = y_offset < 0 ? y_offset : 0;
+	int const bottom = min(max(bottom_tmp, text->first_y),
+		     static_cast<int>(text->first_y + owner.height()))-offset;
+	int const top = min(max(top_tmp, text->first_y),
+		  static_cast<int>(text->first_y + owner.height()))-offset;
 	
-	typedef unsigned long ulong;
-	
-	bottom = min(max(ulong(bottom), first), first + owner.height());
-	top = min(max(ulong(top), first), first + owner.height());
-	
-	DrawFromTo(top - first, bottom - first);
-	expose(0, top - first, owner.workWidth(),
-	       bottom - first - (top - first));
+	drawFromTo(text, bv, top - text->first_y,
+		   bottom - text->first_y, y_offset,
+		   x_offset);
+	expose(0, top - text->first_y, owner.workWidth(),
+	       bottom - text->first_y - (top - text->first_y));
 }