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122e7616d7
are InsetFormula, InsetExternal, InsetGraphic and InsetInclude that all need to inform the BufferView of their changed status when the graphic is loaded. git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@7897 a592a061-630c-0410-9148-cb99ea01b6c8
203 lines
4.7 KiB
C
203 lines
4.7 KiB
C
/**
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* \file render_graphic.C
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* This file is part of LyX, the document processor.
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* Licence details can be found in the file COPYING.
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*
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* \author Angus Leeming
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*
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* Full author contact details are available in file CREDITS.
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*/
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#include <config.h>
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#include "render_graphic.h"
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#include "insets/inset.h"
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#include "gettext.h"
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#include "LColor.h"
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#include "metricsinfo.h"
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#include "frontends/font_metrics.h"
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#include "frontends/Painter.h"
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#include "graphics/GraphicsImage.h"
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#include "support/filetools.h"
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using lyx::support::AbsolutePath;
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using lyx::support::OnlyFilename;
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using std::string;
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RenderGraphic::RenderGraphic()
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: checksum_(0)
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{}
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RenderGraphic::RenderGraphic(RenderGraphic const & other)
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: RenderBase(other),
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loader_(other.loader_),
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params_(other.params_),
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checksum_(0)
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{}
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RenderBase * RenderGraphic::clone() const
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{
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return new RenderGraphic(*this);
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}
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void RenderGraphic::update(lyx::graphics::Params const & params)
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{
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params_ = params;
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if (!params_.filename.empty()) {
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BOOST_ASSERT(AbsolutePath(params_.filename));
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loader_.reset(params_.filename, params_);
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}
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}
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bool RenderGraphic::hasFileChanged() const
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{
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unsigned long const new_checksum = loader_.checksum();
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bool const file_has_changed = checksum_ != new_checksum;
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if (file_has_changed)
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checksum_ = new_checksum;
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return file_has_changed;
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}
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boost::signals::connection RenderGraphic::connect(slot_type const & slot) const
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{
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return loader_.connect(slot);
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}
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string const RenderGraphic::statusMessage() const
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{
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switch (loader_.status()) {
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case lyx::graphics::WaitingToLoad:
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return _("Not shown.");
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case lyx::graphics::Loading:
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return _("Loading...");
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case lyx::graphics::Converting:
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return _("Converting to loadable format...");
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case lyx::graphics::Loaded:
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return _("Loaded into memory. Must now generate pixmap.");
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case lyx::graphics::ScalingEtc:
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return _("Scaling etc...");
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case lyx::graphics::Ready:
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return _("Ready to display");
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case lyx::graphics::ErrorNoFile:
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return _("No file found!");
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case lyx::graphics::ErrorConverting:
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return _("Error converting to loadable format");
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case lyx::graphics::ErrorLoading:
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return _("Error loading file into memory");
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case lyx::graphics::ErrorGeneratingPixmap:
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return _("Error generating the pixmap");
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case lyx::graphics::ErrorUnknown:
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return _("No image");
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}
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return string();
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}
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bool RenderGraphic::readyToDisplay() const
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{
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if (!loader_.image() || loader_.status() != lyx::graphics::Ready)
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return false;
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return loader_.image()->isDrawable();
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}
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void RenderGraphic::metrics(MetricsInfo & mi, Dimension & dim) const
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{
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bool image_ready = readyToDisplay();
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dim.asc = image_ready ? loader_.image()->getHeight() : 50;
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dim.des = 0;
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if (image_ready) {
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dim.wid = loader_.image()->getWidth() +
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2 * InsetOld::TEXT_TO_INSET_OFFSET;
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} else {
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int font_width = 0;
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LyXFont msgFont(mi.base.font);
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msgFont.setFamily(LyXFont::SANS_FAMILY);
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string const justname = OnlyFilename(params_.filename);
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if (!justname.empty()) {
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msgFont.setSize(LyXFont::SIZE_FOOTNOTE);
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font_width = font_metrics::width(justname, msgFont);
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}
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string const msg = statusMessage();
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if (!msg.empty()) {
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msgFont.setSize(LyXFont::SIZE_TINY);
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font_width = std::max(font_width,
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font_metrics::width(msg, msgFont));
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}
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dim.wid = std::max(50, font_width + 15);
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}
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dim_ = dim;
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}
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void RenderGraphic::draw(PainterInfo & pi, int x, int y) const
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{
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if (params_.display != lyx::graphics::NoDisplay &&
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loader_.status() == lyx::graphics::WaitingToLoad)
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loader_.startLoading();
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if (params_.display != lyx::graphics::NoDisplay &&
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!loader_.monitoring())
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loader_.startMonitoring();
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// This will draw the graphics. If the graphics has not been loaded yet,
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// we draw just a rectangle.
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if (readyToDisplay()) {
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pi.pain.image(x + InsetOld::TEXT_TO_INSET_OFFSET,
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y - dim_.asc,
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dim_.wid - 2 * InsetOld::TEXT_TO_INSET_OFFSET,
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dim_.asc + dim_.des,
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*loader_.image());
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} else {
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pi.pain.rectangle(x + InsetOld::TEXT_TO_INSET_OFFSET,
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y - dim_.asc,
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dim_.wid - 2 * InsetOld::TEXT_TO_INSET_OFFSET,
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dim_.asc + dim_.des,
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LColor::foreground);
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// Print the file name.
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LyXFont msgFont = pi.base.font;
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msgFont.setFamily(LyXFont::SANS_FAMILY);
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string const justname = OnlyFilename(params_.filename);
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if (!justname.empty()) {
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msgFont.setSize(LyXFont::SIZE_FOOTNOTE);
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pi.pain.text(x + InsetOld::TEXT_TO_INSET_OFFSET + 6,
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y - font_metrics::maxAscent(msgFont) - 4,
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justname, msgFont);
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}
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// Print the message.
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string const msg = statusMessage();
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if (!msg.empty()) {
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msgFont.setSize(LyXFont::SIZE_TINY);
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pi.pain.text(x + InsetOld::TEXT_TO_INSET_OFFSET + 6,
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y - 4, msg, msgFont);
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}
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}
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}
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