2 * \file render_graphic.C
3 * This file is part of LyX, the document processor.
4 * Licence details can be found in the file COPYING.
6 * \author Angus Leeming
8 * Full author contact details are available in file CREDITS.
13 #include "render_graphic.h"
15 #include "insets/inset.h"
21 #include "metricsinfo.h"
23 #include "frontends/FontMetrics.h"
24 #include "frontends/Painter.h"
26 #include "graphics/GraphicsImage.h"
28 #include "support/filetools.h"
30 #include <boost/bind.hpp>
35 using support::onlyFilename;
41 RenderGraphic::RenderGraphic(InsetBase const * inset)
43 loader_.connect(boost::bind(&LyX::updateInset,
44 boost::cref(LyX::cref()), inset));
48 RenderGraphic::RenderGraphic(RenderGraphic const & other,
49 InsetBase const * inset)
51 loader_(other.loader_),
52 params_(other.params_)
54 loader_.connect(boost::bind(&LyX::updateInset,
55 boost::cref(LyX::cref()), inset));
59 auto_ptr<RenderBase> RenderGraphic::clone(InsetBase const * inset) const
61 return auto_ptr<RenderBase>(new RenderGraphic(*this, inset));
65 void RenderGraphic::update(graphics::Params const & params)
69 if (!params_.filename.empty()) {
70 loader_.reset(params_.filename, params_);
77 bool displayGraphic(graphics::Params const & params)
79 return params.display != graphics::NoDisplay &&
80 lyxrc.display_graphics != graphics::NoDisplay;
84 docstring const statusMessage(graphics::Params const & params,
85 graphics::ImageStatus status)
89 if (!displayGraphic(params))
90 ret = _("Not shown.");
93 case graphics::WaitingToLoad:
94 ret = _("Not shown.");
96 case graphics::Loading:
97 ret = _("Loading...");
99 case graphics::Converting:
100 ret = _("Converting to loadable format...");
102 case graphics::Loaded:
103 ret = _("Loaded into memory. Generating pixmap...");
105 case graphics::ScalingEtc:
106 ret = _("Scaling etc...");
108 case graphics::Ready:
109 ret = _("Ready to display");
111 case graphics::ErrorNoFile:
112 ret = _("No file found!");
114 case graphics::ErrorConverting:
115 ret = _("Error converting to loadable format");
117 case graphics::ErrorLoading:
118 ret = _("Error loading file into memory");
120 case graphics::ErrorGeneratingPixmap:
121 ret = _("Error generating the pixmap");
123 case graphics::ErrorUnknown:
133 bool readyToDisplay(graphics::Loader const & loader)
135 if (!loader.image() || loader.status() != graphics::Ready)
137 return loader.image()->isDrawable();
143 bool RenderGraphic::metrics(MetricsInfo & mi, Dimension & dim) const
145 bool image_ready = displayGraphic(params_) && readyToDisplay(loader_);
147 dim.asc = image_ready ? loader_.image()->getHeight() : 50;
151 dim.wid = loader_.image()->getWidth() +
152 2 * InsetOld::TEXT_TO_INSET_OFFSET;
156 LyXFont msgFont(mi.base.font);
157 msgFont.setFamily(LyXFont::SANS_FAMILY);
160 docstring const justname =
161 from_utf8(onlyFilename(params_.filename.absFilename()));
162 if (!justname.empty()) {
163 msgFont.setSize(LyXFont::SIZE_FOOTNOTE);
164 font_width = theFontMetrics(msgFont)
168 docstring const msg = statusMessage(params_, loader_.status());
170 msgFont.setSize(LyXFont::SIZE_TINY);
171 font_width = std::max(font_width,
172 theFontMetrics(msgFont).width(msg));
175 dim.wid = std::max(50, font_width + 15);
178 bool const changed = dim_ != dim;
184 void RenderGraphic::draw(PainterInfo & pi, int x, int y) const
186 if (displayGraphic(params_)) {
187 if (loader_.status() == graphics::WaitingToLoad)
188 loader_.startLoading();
189 if (!loader_.monitoring())
190 loader_.startMonitoring();
193 // This will draw the graphics. If the graphics has not been
194 // loaded yet, we draw just a rectangle.
196 if (displayGraphic(params_) && readyToDisplay(loader_)) {
197 pi.pain.image(x + InsetOld::TEXT_TO_INSET_OFFSET,
199 dim_.wid - 2 * InsetOld::TEXT_TO_INSET_OFFSET,
204 pi.pain.rectangle(x + InsetOld::TEXT_TO_INSET_OFFSET,
206 dim_.wid - 2 * InsetOld::TEXT_TO_INSET_OFFSET,
210 // Print the file name.
211 LyXFont msgFont = pi.base.font;
212 msgFont.setFamily(LyXFont::SANS_FAMILY);
213 string const justname = onlyFilename(params_.filename.absFilename());
215 if (!justname.empty()) {
216 msgFont.setSize(LyXFont::SIZE_FOOTNOTE);
217 pi.pain.text(x + InsetOld::TEXT_TO_INSET_OFFSET + 6,
218 y - theFontMetrics(msgFont).maxAscent() - 4,
219 from_utf8(justname), msgFont);
222 // Print the message.
223 docstring const msg = statusMessage(params_, loader_.status());
225 msgFont.setSize(LyXFont::SIZE_TINY);
226 pi.pain.text(x + InsetOld::TEXT_TO_INSET_OFFSET + 6,
227 y - 4, msg, msgFont);