]> git.lyx.org Git - lyx.git/blobdiff - src/screen.C
another pesky \#warning snuck in
[lyx.git] / src / screen.C
index 929ffe28a6b89275dfda52e9e317027a867c46c0..5ef3ad3aac364591c23dbe1fe1c0feed5030697c 100644 (file)
 #include "buffer.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.foreground = BlackPixel(fl_get_display()
+                                   DefaultScreen(fl_get_display()));
        
-       val.function=GXcopy;
+       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)
 {
        // the cursor isnt yet visible
        cursor_visible = false;
@@ -62,20 +67,33 @@ LyXScreen::LyXScreen(WorkArea & o) //, LyXText * text_ptr)
 }
 
 
-void LyXScreen::Redraw(LyXText * text)
+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(text, 0, owner.height());
+       DrawFromTo(text, bv, 0, owner.height());
        expose(0, 0, owner.workWidth(), owner.height());
        if (cursor_visible) {
                cursor_visible = false;
-               ShowCursor(text);
+               ShowCursor(text, bv);
        }
 }
 
 
 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,
@@ -86,23 +104,31 @@ void LyXScreen::expose(int x, int y, int exp_width, int exp_height)
 }
 
 
-void LyXScreen::DrawFromTo(LyXText * text, int y1, int y2, int y_offset, int x_offset)
+void LyXScreen::DrawFromTo(LyXText * text, BufferView * bv,
+                          int y1, int y2, int y_offset, int x_offset)
 {
-       long y_text = text->first + y1;
+       int y_text = text->first + 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 - text->first;
+       int y = y_text - text->first;
        // y1 is now the real beginning of row on the screen
        
        while (row != 0 && y < y2) {
-               text->GetVisibleRow(owner.owner(), y+y_offset, x_offset, row, y + text->first);
+               LyXText::text_status st = bv->text->status;
+               do {
+                       bv->text->status = st;
+                       text->GetVisibleRow(bv, y + y_offset,
+                                           x_offset, row, y + text->first);
+               } while (bv->text->status == LyXText::CHANGED_IN_DRAW);
+               bv->text->status = st;
                y += row->height();
                row = row->next();
        }
-   
+       force_clear = false;
+
        // maybe we have to clear the screen at the bottom
        if ((y < y2) && text->bv_owner) {
                owner.getPainter().fillRectangle(0, y,
@@ -113,34 +139,41 @@ void LyXScreen::DrawFromTo(LyXText * text, int y1, int y2, int y_offset, int x_o
 }
 
 
-void LyXScreen::DrawOneRow(LyXText * text, Row * row, long y_text,
-                          int y_offset, int x_offset)
+void LyXScreen::DrawOneRow(LyXText * text, BufferView * bv, Row * row,
+                          int y_text, int y_offset, int x_offset)
 {
-       long y = y_text - text->first + y_offset;
-      
-       if (y + row->height() > 0
-           && y - row->height() <= long(owner.height())) {
+       int const y = y_text - text->first + 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, x_offset, row, y + text->first);
+               LyXText::text_status st = bv->text->status;
+               do {
+                       bv->text->status = st;
+                       text->GetVisibleRow(bv, y, x_offset, row,
+                                           y + text->first);
+               } while (bv->text->status == LyXText::CHANGED_IN_DRAW);
+               bv->text->status = st;
        }
+       force_clear = false;
 }
 
 
 /* draws the screen, starting with textposition y. uses as much already
 * printed pixels as possible */
-void LyXScreen::Draw(LyXText * text, unsigned long y)
+void LyXScreen::Draw(LyXText * text, BufferView * bv, unsigned int y)
 {
        if (cursor_visible) HideCursor();
 
-       unsigned long old_first = text->first;
+       int const old_first = text->first;
        text->first = y;
 
        // is any optimiziation possible?
        if ((y - old_first) < owner.height()
            && (old_first - y) < owner.height()) {
                if (text->first < old_first) {
-                       DrawFromTo(text, 0, old_first - text->first);
-                       XCopyArea (fl_display,
+                       DrawFromTo(text, bv, 0, old_first - text->first);
+                       XCopyArea (fl_get_display(),
                                   owner.getWin(),
                                   owner.getWin(),
                                   gc_copy,
@@ -156,10 +189,10 @@ void LyXScreen::Draw(LyXText * text, unsigned long y)
                               owner.workWidth(),
                               old_first - text->first);
                } else  {
-                       DrawFromTo(text,
+                       DrawFromTo(text, bv,
                                   owner.height() + old_first - text->first,
                                   owner.height());
-                       XCopyArea (fl_display,
+                       XCopyArea (fl_get_display(),
                                   owner.getWin(),
                                   owner.getWin(),
                                   gc_copy,
@@ -175,20 +208,20 @@ void LyXScreen::Draw(LyXText * text, unsigned long y)
                }
        } else {
                // make a dumb new-draw 
-               DrawFromTo(text, 0, owner.height());
+               DrawFromTo(text, bv, 0, owner.height());
                expose(0, 0, owner.workWidth(), owner.height());
        }
 }
 
 
-void LyXScreen::ShowCursor(LyXText const * text)
+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, text->cursor.x(), text->cursor.y(),
@@ -200,22 +233,22 @@ void LyXScreen::ShowCursor(LyXText const * text)
 
 
 /* returns true if first has changed, otherwise false */ 
-bool LyXScreen::FitManualCursor(LyXText * text,
-                               long /*x*/, long y, int asc, int desc)
+bool LyXScreen::FitManualCursor(LyXText * text, BufferView * bv,
+                               int /*x*/, int y, int asc, int desc)
 {
-       long newtop = text->first;
+       int newtop = text->first;
   
-       if (y + desc - text->first >= owner.height())
+       if (y + desc - text->first >= static_cast<int>(owner.height()))
                newtop = y - 3 * owner.height() / 4;  // the scroll region must be so big!!
-       else if (y - asc < long(text->first)
+       else if (y - asc < static_cast<int>(text->first)
                && text->first > 0) {
                newtop = y - owner.height() / 4;
        }
 
-       newtop = max(newtop, 0L); // can newtop ever be < 0? (Lgb)
+       newtop = max(newtop, 0); // can newtop ever be < 0? (Lgb)
   
-       if (newtop != long(text->first)) {
-               Draw(text, newtop);
+       if (newtop != static_cast<int>(text->first)) {
+               Draw(text, bv, newtop);
                text->first = newtop;
                return true;
        }
@@ -223,27 +256,29 @@ bool LyXScreen::FitManualCursor(LyXText * text,
 }
 
 
-void LyXScreen::ShowManualCursor(LyXText const * text, long x, long y,
+void LyXScreen::ShowManualCursor(LyXText const * text, int x, int y,
                                 int asc, int desc, Cursor_Shape shape)
 {
-       unsigned long y1 = max(y - text->first - asc, 0UL);
-       typedef unsigned long ulong;
+       // Update the cursor color.
+       setCursorColor();
        
-       unsigned long y2 = min(y - text->first + desc, ulong(owner.height()));
+       int const y1 = max(y - text->first - asc, 0);
+       int const y_tmp = min(y - text->first + desc,
+                             static_cast<int>(owner.height()));
 
        // Secure against very strange situations
-       y2 = max(y2, y1);
+       int const y2 = max(y_tmp, y1);
        
        if (cursor_pixmap){
-               XFreePixmap(fl_display, 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;
@@ -259,12 +294,12 @@ void LyXScreen::ShowManualCursor(LyXText const * text, long x, long y,
                }
 
                cursor_pixmap = 
-                       XCreatePixmap (fl_display,
+                       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,
@@ -273,20 +308,20 @@ void LyXScreen::ShowManualCursor(LyXText const * text, long x, long y,
                           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(),
@@ -305,7 +340,7 @@ void LyXScreen::HideCursor()
        if (!cursor_visible) return;
 
        if (cursor_pixmap){
-               XCopyArea (fl_display
+               XCopyArea (fl_get_display()
                           cursor_pixmap,
                           owner.getWin(),
                           gc_copy,
@@ -318,19 +353,19 @@ void LyXScreen::HideCursor()
 }
 
 
-void LyXScreen::CursorToggle(LyXText const * text)
+void LyXScreen::CursorToggle(LyXText const * text, BufferView const * bv)
 {
        if (cursor_visible)
                HideCursor();
        else
-               ShowCursor(text);
+               ShowCursor(text, bv);
 }
 
 
 /* returns a new top so that the cursor is visible */ 
-unsigned long LyXScreen::TopCursorVisible(LyXText const * text)
+unsigned int LyXScreen::TopCursorVisible(LyXText const * text)
 {
-       long newtop = text->first;
+       int newtop = text->first;
 
        if (text->cursor.y()
            - text->cursor.row()->baseline()
@@ -344,18 +379,19 @@ unsigned long LyXScreen::TopCursorVisible(LyXText const * text)
                else
                        newtop = text->cursor.y()
                                - 3 * owner.height() / 4;   /* the scroll region must be so big!! */
-       } else if (text->cursor.y() - text->cursor.row()->baseline() < text->first
-                  && text->first > 0) {
+       } else if (static_cast<int>((text->cursor.y()) - text->cursor.row()->baseline()) <
+                  text->first && text->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(text->first));
+                       newtop = min(newtop, int(text->first));
                }
        }
 
-       newtop = max(newtop, 0L);
+       newtop = max(newtop, 0);
 
        return newtop;
 }
@@ -363,48 +399,41 @@ unsigned long LyXScreen::TopCursorVisible(LyXText const * text)
 
 /* scrolls the screen so that the cursor is visible, if necessary.
 * returns true if a change was made, otherwise false */ 
-bool LyXScreen::FitCursor(LyXText * text)
+bool LyXScreen::FitCursor(LyXText * text, BufferView * bv)
 {
        // Is a change necessary?
-       unsigned long newtop = TopCursorVisible(text);
-       bool result = (newtop != text->first);
+       int const newtop = TopCursorVisible(text);
+       bool const result = (newtop != text->first);
        if (result)
-               Draw(text, newtop);
+               Draw(text, bv, newtop);
        return result;
 }
 
    
-void LyXScreen::Update(LyXText * text, int y_offset, int x_offset)
+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(text->first), 0L);
-               int height;
-               if (text->inset_owner)
-                       height = text->inset_owner->ascent(owner.owner(),
-                                                          text->real_current_font)
-                               + text->inset_owner->descent(owner.owner(),
-                                                            text->real_current_font);
-               else
-                       height = owner.height();
-               DrawFromTo(text, y, owner.height(), y_offset, x_offset);
+               int const y = max(int(text->refresh_y - text->first), 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);
+               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, text->refresh_row, text->refresh_y,
+               DrawOneRow(text, bv, text->refresh_row, text->refresh_y,
                           y_offset, x_offset);
                text->status = LyXText::UNCHANGED;
                expose(0, text->refresh_y - text->first + 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;
@@ -412,46 +441,54 @@ void LyXScreen::Update(LyXText * text, int y_offset, int x_offset)
 }
 
 
-void LyXScreen::ToggleSelection(LyXText * text, 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(), text->first),
-                         text->first + owner.height());
-       long top = min(max(text->sel_start_cursor.y()
-                          - text->sel_start_cursor.row()->baseline(), text->first),
-                      text->first + owner.height());
+       int const bottom = min(
+               max(static_cast<int>(text->sel_end_cursor.y()
+                                    - text->sel_end_cursor.row()->baseline()
+                                    + text->sel_end_cursor.row()->height()),
+                   text->first),
+               static_cast<int>(text->first + owner.height()));
+       int const top = min(
+               max(static_cast<int>(text->sel_start_cursor.y() -
+                                    text->sel_start_cursor.row()->baseline()),
+                   text->first),
+               static_cast<int>(text->first + owner.height()));
 
        if (kill_selection)
                text->selection = 0;
-       DrawFromTo(text, top - text->first, bottom - text->first);
+       DrawFromTo(text, bv, top - text->first, bottom - text->first,
+                  y_offset, x_offset);
        expose(0, top - text->first,
               owner.workWidth(),
               bottom - text->first - (top - text->first));
 }
   
    
-void LyXScreen::ToggleToggle(LyXText * text, int y_offset, int x_offset)
+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()
+       int const bottom_tmp = text->toggle_end_cursor.y()
                - text->toggle_end_cursor.row()->baseline() 
                + text->toggle_end_cursor.row()->height();
        
-       typedef unsigned long ulong;
-       
-       bottom = min(max(ulong(bottom), text->first), text->first + owner.height());
-       top = min(max(ulong(top), text->first), text->first + owner.height());
-       
-       DrawFromTo(text, top - text->first, bottom - text->first, y_offset,
+       int const bottom = min(max(bottom_tmp, text->first),
+                    static_cast<int>(text->first + owner.height()));
+       int const top = min(max(top_tmp, text->first),
+                 static_cast<int>(text->first + owner.height()));
+
+       DrawFromTo(text, bv, top - text->first, bottom - text->first, y_offset,
                   x_offset);
        expose(0, top - text->first, owner.workWidth(),
               bottom - text->first - (top - text->first));