-/* This file is part of
-* ======================================================
-*
-* LyX, The Document Processor
-*
-* Copyright 1995 Matthias Ettrich
-* Copyright 1995-1998 The LyX Team
-*
-* ====================================================== */
-
-#include <config.h>
+/**
+ * \file screen.C
+ * Copyright 2002 the LyX Team
+ * Read the file COPYING
+ *
+ * \author John Levon <moz@compsoc.man.ac.uk>
+ */
#ifdef __GNUG__
#pragma implementation
#endif
-#include <algorithm>
+#include <config.h>
#include "screen.h"
#include "lyxtext.h"
#include "lyxrow.h"
-#include "frontends/Painter.h"
-#include "frontends/WorkArea.h"
-#include "buffer.h"
#include "BufferView.h"
+#include "buffer.h"
+#include "WorkArea.h"
+#include "Painter.h"
#include "font_metrics.h"
-#include "insets/insettext.h"
-#include "frontends/xforms/ColorHandler.h"
#include "language.h"
+#include "debug.h"
-using std::max;
using std::min;
-
-namespace {
-
-GC createGC()
-{
- XGCValues val;
- 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_get_display(), RootWindow(fl_get_display(), 0),
- GCForeground | GCFunction | GCGraphicsExposures
- | GCLineWidth | GCLineStyle , &val);
-}
-
-} // namespace anon
-
-
-// Constructor
-LScreen::LScreen(WorkArea & o)
- : owner(o), force_clear(true)
+using std::max;
+using std::endl;
+
+LyXScreen::LyXScreen()
+ : force_clear_(true), cursor_visible_(false)
{
- // the cursor isnt yet visible
- cursor_visible = false;
- cursor_pixmap = 0;
- cursor_pixmap_x = 0;
- cursor_pixmap_y = 0;
- cursor_pixmap_w = 0;
- cursor_pixmap_h = 0;
-
- // We need this GC
- gc_copy = createGC();
}
-LScreen::~LScreen()
+LyXScreen::~LyXScreen()
{
- XFreeGC(fl_get_display(), gc_copy);
}
+// FIXME: GUII these cursor methods need to decide
+// whether the workarea is focused or not
-void LScreen::reset()
+void LyXScreen::showCursor(LyXText const * text, BufferView const * bv)
{
- XFreeGC(fl_get_display(), gc_copy);
- // the cursor isnt yet visible
- cursor_visible = false;
- cursor_pixmap = 0;
- cursor_pixmap_x = 0;
- cursor_pixmap_y = 0;
- cursor_pixmap_w = 0;
- cursor_pixmap_h = 0;
-
- // We need this GC
- gc_copy = createGC();
-}
+ if (cursor_visible_)
+ return;
+ workarea().getPainter().start();
-void LScreen::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 LScreen::redraw(LyXText * text, BufferView * bv)
-{
- drawFromTo(text, bv, 0, owner.workHeight(), 0, 0, text == bv->text);
- expose(0, 0, owner.workWidth(), owner.workHeight());
- if (cursor_visible) {
- cursor_visible = false;
- bv->showCursor();
- }
-}
-
-
-void LScreen::expose(int x, int y, int exp_width, int exp_height)
-{
- XCopyArea(fl_get_display(),
- owner.getPixmap(),
- owner.getWin(),
- gc_copy,
- x, y,
- exp_width, exp_height,
- x + owner.xpos(),
- y + owner.ypos());
-}
-
-
-void LScreen::drawFromTo(LyXText * text, BufferView * bv,
- int y1, int y2, int y_offset, int x_offset,
- bool internal)
-{
- 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
-
- int y = y_text - text->first_y;
- // y1 is now the real beginning of row on the screen
-
- while (row != 0 && y < y2) {
- 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) {
- text->fullRebreak(bv);
- st = LyXText::NEED_MORE_REFRESH;
- text->setCursor(bv, text->cursor.par(),
- text->cursor.pos());
- text->status(bv, st);
- // we should be sure our row-pointer is still valid, so it's
- // better to recompute it.
- y_text = y + text->first_y;
- row = text->getRowNearY(y_text);
- y = y_text - text->first_y;
- 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) && text->bv_owner) {
- owner.getPainter().fillRectangle(0, y,
- owner.workWidth(),
- y2 - y,
- LColor::bottomarea);
- }
-}
-
-
-void LScreen::drawOneRow(LyXText * text, BufferView * bv, Row * row,
- int y_text, int y_offset, int x_offset)
-{
- int const y = y_text - text->first_y + y_offset;
-
- if (((y + row->height()) > 0) &&
- ((y - row->height()) <= static_cast<int>(owner.workHeight()))) {
- // ok there is something visible
- text->getVisibleRow(bv, y, x_offset, row, y + text->first_y);
- }
- force_clear = false;
-}
-
-
-/* draws the screen, starting with textposition y. uses as much already
- * printed pixels as possible */
-void LScreen::draw(LyXText * text, BufferView * bv, unsigned int y)
-{
- if (cursor_visible) hideCursor();
-
- 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.workHeight()
- && (old_first - y) < owner.workHeight())
- {
- 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.workHeight() - old_first + text->first_y,
- owner.xpos(),
- owner.ypos() + old_first - text->first_y
- );
- // expose the area drawn
- expose(0, 0,
- owner.workWidth(),
- old_first - text->first_y);
- } else {
- drawFromTo(text, bv,
- owner.workHeight() + old_first - text->first_y,
- owner.workHeight(), 0, 0, internal);
- XCopyArea (fl_get_display(),
- owner.getWin(),
- owner.getWin(),
- gc_copy,
- owner.xpos(),
- owner.ypos() + text->first_y - old_first,
- owner.workWidth(),
- owner.workHeight() + old_first - text->first_y,
- owner.xpos(),
- owner.ypos());
- // expose the area drawn
- expose(0, owner.workHeight() + old_first - text->first_y,
- owner.workWidth(), text->first_y - old_first);
- }
- } else {
- // make a dumb new-draw
- drawFromTo(text, bv, 0, owner.workHeight(), 0, 0, internal);
- expose(0, 0, owner.workWidth(), owner.workHeight());
- }
-}
-
-
-void LScreen::showCursor(LyXText const * text, BufferView const * bv)
-{
- if (!cursor_visible) {
- Cursor_Shape shape = BAR_SHAPE;
- if (text->real_current_font.language() !=
- bv->buffer()->params.language
- || text->real_current_font.isVisibleRightToLeft()
- != bv->buffer()->params.language->RightToLeft())
- shape = (text->real_current_font.isVisibleRightToLeft())
- ? REVERSED_L_SHAPE : L_SHAPE;
- showManualCursor(text, text->cursor.x(), text->cursor.y(),
- font_metrics::maxAscent(text->real_current_font),
- font_metrics::maxDescent(text->real_current_font),
- shape);
+ Cursor_Shape shape = BAR_SHAPE;
+ BufferParams const & bp(bv->buffer()->params);
+ LyXFont const & realfont(text->real_current_font);
+
+ if (realfont.language() != bp.language
+ || realfont.isVisibleRightToLeft()
+ != bp.language->RightToLeft()) {
+ shape = (realfont.isVisibleRightToLeft())
+ ? REVERSED_L_SHAPE : L_SHAPE;
}
+
+ showManualCursor(text, text->cursor.x(), text->cursor.y(),
+ font_metrics::maxAscent(realfont),
+ font_metrics::maxDescent(realfont),
+ shape);
+
+ workarea().getPainter().end();
}
-/* returns true if first has changed, otherwise false */
-bool LScreen::fitManualCursor(LyXText * text, BufferView * bv,
- int /*x*/, int y, int asc, int desc)
+bool LyXScreen::fitManualCursor(BufferView * bv, LyXText * text,
+ int /*x*/, int y, int asc, int desc)
{
+ int const vheight = workarea().workHeight();
int newtop = text->first_y;
-
- if (y + desc - text->first_y >= static_cast<int>(owner.workHeight()))
- newtop = y - 3 * owner.workHeight() / 4; // the scroll region must be so big!!
+
+ if (y + desc - text->first_y >= vheight)
+ newtop = y - 3 * vheight / 4; // the scroll region must be so big!!
else if (y - asc < text->first_y
&& text->first_y > 0) {
- newtop = y - owner.workHeight() / 4;
+ newtop = y - vheight / 4;
}
newtop = max(newtop, 0); // can newtop ever be < 0? (Lgb)
-
+
if (newtop != text->first_y) {
draw(text, bv, newtop);
text->first_y = newtop;
}
-void LScreen::showManualCursor(LyXText const * text, int x, int y,
- int asc, int desc, Cursor_Shape shape)
+void LyXScreen::cursorToggle(BufferView * bv) const
{
- // 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.workHeight()));
-
- // Secure against very strange situations
- int const y2 = max(y_tmp, y1);
-
- if (cursor_pixmap) {
- XFreePixmap(fl_get_display(), cursor_pixmap);
- cursor_pixmap = 0;
- }
-
- if (y2 > 0 && y1 < int(owner.workHeight())) {
- cursor_pixmap_h = y2 - y1 + 1;
- cursor_pixmap_y = y1;
-
- switch (shape) {
- case BAR_SHAPE:
- cursor_pixmap_w = 1;
- cursor_pixmap_x = x;
- break;
- case L_SHAPE:
- cursor_pixmap_w = cursor_pixmap_h/3;
- cursor_pixmap_x = x;
- break;
- case REVERSED_L_SHAPE:
- cursor_pixmap_w = cursor_pixmap_h/3;
- cursor_pixmap_x = x - cursor_pixmap_w + 1;
- break;
- }
-
- cursor_pixmap =
- XCreatePixmap (fl_get_display(),
- fl_root,
- cursor_pixmap_w,
- cursor_pixmap_h,
- fl_get_visual_depth());
- XCopyArea (fl_get_display(),
- owner.getWin(),
- cursor_pixmap,
- gc_copy,
- owner.xpos() + cursor_pixmap_x,
- owner.ypos() + cursor_pixmap_y,
- cursor_pixmap_w,
- cursor_pixmap_h,
- 0, 0);
- XDrawLine(fl_get_display(),
- owner.getWin(),
- gc_copy,
- x + owner.xpos(),
- y1 + owner.ypos(),
- x + owner.xpos(),
- y2 + owner.ypos());
- switch (shape) {
- case BAR_SHAPE:
- break;
- case L_SHAPE:
- case REVERSED_L_SHAPE:
- int const rectangle_h = (cursor_pixmap_h + 10) / 20;
- XFillRectangle(fl_get_display(),
- owner.getWin(),
- gc_copy,
- cursor_pixmap_x + owner.xpos(),
- y2 - rectangle_h + 1 + owner.ypos(),
- cursor_pixmap_w - 1, rectangle_h);
- break;
- }
-
- }
- cursor_visible = true;
-}
-
-
-void LScreen::hideCursor()
-{
- if (!cursor_visible) return;
-
- if (cursor_pixmap) {
- XCopyArea (fl_get_display(),
- cursor_pixmap,
- owner.getWin(),
- gc_copy,
- 0, 0,
- cursor_pixmap_w, cursor_pixmap_h,
- cursor_pixmap_x + owner.xpos(),
- cursor_pixmap_y + owner.ypos());
- }
- cursor_visible = false;
-}
-
-
-void LScreen::cursorToggle(BufferView * bv) const
-{
- if (cursor_visible)
+ if (cursor_visible_)
bv->hideCursor();
else
bv->showCursor();
}
-/* returns a new top so that the cursor is visible */
-unsigned int LScreen::topCursorVisible(LyXCursor const & cursor, int top_y)
+unsigned int LyXScreen::topCursorVisible(LyXCursor const & cursor, int top_y)
{
- int const vheight = owner.workHeight();
- int newtop = top_y;
+ int const vheight = workarea().workHeight();
+ int newtop = top_y;
Row * row = cursor.row();
// Is this a hack? Yes, probably... (Lgb)
if (!row)
return max(newtop, 0);
-
+
if (cursor.y() - row->baseline() + row->height()
- top_y >= vheight) {
if (row->height() < vheight
newtop = cursor.y()
- vheight / 2; /* the scroll region must be so big!! */
}
-
- } else if (static_cast<int>(cursor.y() - row->baseline()) <
+
+ } else if (static_cast<int>((cursor.y()) - row->baseline()) <
top_y && top_y > 0) {
if (row->height() < vheight
&& row->height() > vheight / 4) {
}
-/* scrolls the screen so that the cursor is visible, if necessary.
-* returns true if a change was made, otherwise false */
-bool LScreen::fitCursor(LyXText * text, BufferView * bv)
+bool LyXScreen::fitCursor(LyXText * text, BufferView * bv)
{
// Is a change necessary?
int const newtop = topCursorVisible(text->cursor, text->first_y);
return result;
}
-
-void LScreen::update(LyXText * text, BufferView * bv,
- int y_offset, int x_offset)
+
+void LyXScreen::update(LyXText * text, BufferView * bv,
+ int yo, int xo)
{
+ int const vwidth = workarea().workWidth();
+ int const vheight = workarea().workHeight();
+
+ workarea().getPainter().start();
+
switch (text->status()) {
case LyXText::NEED_MORE_REFRESH:
{
int const y = max(int(text->refresh_y - text->first_y), 0);
- drawFromTo(text, bv, y, owner.workHeight(), y_offset, x_offset);
+ drawFromTo(text, bv, y, vheight, yo, xo);
text->refresh_y = 0;
// 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.workHeight() - y);
+ expose(0, y, vwidth, vheight - y);
}
break;
case LyXText::NEED_VERY_LITTLE_REFRESH:
{
// ok I will update the current cursor row
drawOneRow(text, bv, text->refresh_row, text->refresh_y,
- y_offset, x_offset);
+ yo, xo);
// this because if we had a major update the refresh_row could
// have been set to 0!
if (text->refresh_row) {
// 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());
+ expose(0, text->refresh_y - text->first_y + yo,
+ vwidth, text->refresh_row->height());
}
}
break;
// Nothing needs done
break;
}
+
+ workarea().getPainter().end();
}
-void LScreen::toggleSelection(LyXText * text, BufferView * bv,
+void LyXScreen::toggleSelection(LyXText * text, BufferView * bv,
bool kill_selection,
- int y_offset, int x_offset)
+ int yo, int xo)
{
// only if there is a selection
if (!text->selection.set()) return;
- text->selection.end.row()->baseline()
+ text->selection.end.row()->height()),
text->first_y),
- static_cast<int>(text->first_y + owner.workHeight()));
+ static_cast<int>(text->first_y + workarea().workHeight()));
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.workHeight()));
+ static_cast<int>(text->first_y + workarea().workHeight()));
if (kill_selection)
text->selection.set(false);
+
+ workarea().getPainter().start();
+
drawFromTo(text, bv, top - text->first_y, bottom - text->first_y,
- y_offset, x_offset);
+ yo, xo);
expose(0, top - text->first_y,
- owner.workWidth(),
- bottom - text->first_y - (top - text->first_y));
+ workarea().workWidth(),
+ bottom - text->first_y - (top - text->first_y));
+
+ workarea().getPainter().end();
}
-
-
-void LScreen::toggleToggle(LyXText * text, BufferView * bv,
- int y_offset, int x_offset)
+
+
+void LyXScreen::toggleToggle(LyXText * text, BufferView * bv,
+ int yo, int xo)
{
if (text->toggle_cursor.par() == text->toggle_end_cursor.par()
&& text->toggle_cursor.pos() == text->toggle_end_cursor.pos())
return;
-
+
int const top_tmp = text->toggle_cursor.y()
- text->toggle_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 offset = yo < 0 ? yo : 0;
int const bottom = min(max(bottom_tmp, text->first_y),
- static_cast<int>(text->first_y + owner.workHeight()))-offset;
+ static_cast<int>(text->first_y + workarea().workHeight())) - offset;
int const top = min(max(top_tmp, text->first_y),
- static_cast<int>(text->first_y + owner.workHeight()))-offset;
+ static_cast<int>(text->first_y + workarea().workHeight())) - offset;
+
+ workarea().getPainter().start();
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, yo,
+ xo);
+ expose(0, top - text->first_y, workarea().workWidth(),
bottom - text->first_y - (top - text->first_y));
+
+ workarea().getPainter().end();
+}
+
+
+void LyXScreen::redraw(LyXText * text, BufferView * bv)
+{
+ workarea().getPainter().start();
+
+ if (!text) {
+ greyOut();
+ expose(0, 0, workarea().workWidth(), workarea().workHeight());
+ workarea().getPainter().end();
+ return;
+ }
+
+ drawFromTo(text, bv, 0, workarea().workHeight(), 0, 0, text == bv->text);
+ expose(0, 0, workarea().workWidth(), workarea().workHeight());
+
+ workarea().getPainter().end();
+
+ if (cursor_visible_) {
+ cursor_visible_ = false;
+ bv->showCursor();
+ }
+
+}
+
+
+void LyXScreen::greyOut()
+{
+ workarea().getPainter().fillRectangle(0, 0,
+ workarea().workWidth(),
+ workarea().workHeight(),
+ LColor::bottomarea);
+}
+
+
+void LyXScreen::drawFromTo(LyXText * text, BufferView * bv,
+ int y1, int y2, int yo, int xo,
+ bool internal)
+{
+ 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
+
+ int y = y_text - text->first_y;
+ // y1 is now the real beginning of row on the screen
+
+ while (row != 0 && y < y2) {
+ LyXText::text_status st = text->status();
+ text->getVisibleRow(bv, y + yo,
+ xo, row, y + text->first_y);
+ internal = internal && (st != LyXText::CHANGED_IN_DRAW);
+ while (internal && text->status() == LyXText::CHANGED_IN_DRAW) {
+ 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 + yo,
+ xo, 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) && text->bv_owner) {
+ workarea().getPainter().fillRectangle(0, y,
+ workarea().workWidth(), y2 - y,
+ LColor::bottomarea);
+ }
+}
+
+
+void LyXScreen::drawOneRow(LyXText * text, BufferView * bv, Row * row,
+ int y_text, int yo, int xo)
+{
+ int const y = y_text - text->first_y + yo;
+
+ if (((y + row->height()) > 0) &&
+ ((y - row->height()) <= static_cast<int>(workarea().workHeight()))) {
+ text->getVisibleRow(bv, y, xo, row, y + text->first_y);
+ }
+ force_clear_ = false;
}
projects / features.git / blobdiff