2 * \file RenderGraphic.cpp
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 "RenderGraphic.h"
15 #include "insets/Inset.h"
19 #include "MetricsInfo.h"
21 #include "frontends/FontMetrics.h"
22 #include "frontends/Painter.h"
24 #include "graphics/GraphicsImage.h"
26 #include "support/FileName.h"
27 #include "support/filetools.h"
28 #include "support/gettext.h"
30 #include <boost/bind.hpp>
37 RenderGraphic::RenderGraphic(Inset const * inset)
39 loader_.connect(boost::bind(&Inset::updateFrontend, inset));
43 RenderGraphic::RenderGraphic(RenderGraphic const & other, Inset const * inset)
44 : RenderBase(other), loader_(other.loader_), params_(other.params_)
46 loader_.connect(boost::bind(&Inset::updateFrontend, inset));
50 RenderBase * RenderGraphic::clone(Inset const * inset) const
52 return new RenderGraphic(*this, inset);
56 void RenderGraphic::update(graphics::Params const & params)
60 if (!params_.filename.empty())
61 loader_.reset(params_.filename, params_);
67 bool displayGraphic(graphics::Params const & params)
69 return params.display && lyxrc.display_graphics;
73 docstring const statusMessage(graphics::Params const & params,
74 graphics::ImageStatus status)
78 if (!displayGraphic(params))
79 ret = _("Not shown.");
82 case graphics::WaitingToLoad:
83 ret = _("Not shown.");
85 case graphics::Loading:
86 ret = _("Loading...");
88 case graphics::Converting:
89 ret = _("Converting to loadable format...");
91 case graphics::Loaded:
92 ret = _("Loaded into memory. Generating pixmap...");
94 case graphics::ScalingEtc:
95 ret = _("Scaling etc...");
98 ret = _("Ready to display");
100 case graphics::ErrorNoFile:
101 ret = _("No file found!");
103 case graphics::ErrorConverting:
104 ret = _("Error converting to loadable format");
106 case graphics::ErrorLoading:
107 ret = _("Error loading file into memory");
109 case graphics::ErrorGeneratingPixmap:
110 ret = _("Error generating the pixmap");
112 case graphics::ErrorUnknown:
122 bool readyToDisplay(graphics::Loader const & loader)
124 if (!loader.image() || loader.status() != graphics::Ready)
126 return loader.image()->isDrawable();
132 void RenderGraphic::metrics(MetricsInfo & mi, Dimension & dim) const
134 if (displayGraphic(params_)) {
135 if (loader_.status() == graphics::WaitingToLoad)
136 loader_.startLoading();
137 if (!loader_.monitoring())
138 loader_.startMonitoring();
141 bool image_ready = displayGraphic(params_) && readyToDisplay(loader_);
143 dim.wid = loader_.image()->width() + 2 * Inset::TEXT_TO_INSET_OFFSET;
144 dim.asc = loader_.image()->height();
149 dim.asc = image_ready ? loader_.image()->height() : 50;
154 FontInfo msgFont(mi.base.font);
155 msgFont.setFamily(SANS_FAMILY);
158 docstring const justname = from_utf8(params_.filename.onlyFileName());
159 if (!justname.empty()) {
160 msgFont.setSize(FONT_SIZE_FOOTNOTE);
161 font_width = theFontMetrics(msgFont).width(justname);
164 docstring const msg = statusMessage(params_, loader_.status());
166 msgFont.setSize(FONT_SIZE_TINY);
167 font_width = max(font_width,
168 theFontMetrics(msgFont).width(msg));
171 dim.wid = max(50, font_width + 15);
177 void RenderGraphic::draw(PainterInfo & pi, int x, int y) const
179 // This will draw the graphics. If the graphics has not been
180 // loaded yet, we draw just a rectangle.
182 if (displayGraphic(params_) && readyToDisplay(loader_)) {
183 pi.pain.image(x + Inset::TEXT_TO_INSET_OFFSET,
185 dim_.wid - 2 * Inset::TEXT_TO_INSET_OFFSET,
190 pi.pain.rectangle(x + Inset::TEXT_TO_INSET_OFFSET,
192 dim_.wid - 2 * Inset::TEXT_TO_INSET_OFFSET,
196 // Print the file name.
197 FontInfo msgFont = pi.base.font;
198 msgFont.setFamily(SANS_FAMILY);
199 string const justname = params_.filename.onlyFileName();
201 if (!justname.empty()) {
202 msgFont.setSize(FONT_SIZE_FOOTNOTE);
203 pi.pain.text(x + Inset::TEXT_TO_INSET_OFFSET + 6,
204 y - theFontMetrics(msgFont).maxAscent() - 4,
205 from_utf8(justname), msgFont);
208 // Print the message.
209 docstring const msg = statusMessage(params_, loader_.status());
211 msgFont.setSize(FONT_SIZE_TINY);
212 pi.pain.text(x + Inset::TEXT_TO_INSET_OFFSET + 6,
213 y - 4, msg, msgFont);