1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/gfx/thebes/gfxPlatformGtk.cpp Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,452 @@
1.4 +/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*-
1.5 + * This Source Code Form is subject to the terms of the Mozilla Public
1.6 + * License, v. 2.0. If a copy of the MPL was not distributed with this
1.7 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
1.8 +
1.9 +#define PANGO_ENABLE_BACKEND
1.10 +#define PANGO_ENABLE_ENGINE
1.11 +
1.12 +#include "gfxPlatformGtk.h"
1.13 +#include "prenv.h"
1.14 +
1.15 +#include "nsUnicharUtils.h"
1.16 +#include "nsUnicodeProperties.h"
1.17 +#include "gfx2DGlue.h"
1.18 +#include "gfxFontconfigUtils.h"
1.19 +#include "gfxPangoFonts.h"
1.20 +#include "gfxContext.h"
1.21 +#include "gfxUserFontSet.h"
1.22 +#include "gfxFT2FontBase.h"
1.23 +
1.24 +#include "mozilla/gfx/2D.h"
1.25 +
1.26 +#include "cairo.h"
1.27 +#include <gtk/gtk.h>
1.28 +
1.29 +#include "gfxImageSurface.h"
1.30 +#ifdef MOZ_X11
1.31 +#include <gdk/gdkx.h>
1.32 +#include "gfxXlibSurface.h"
1.33 +#include "cairo-xlib.h"
1.34 +#include "mozilla/Preferences.h"
1.35 +
1.36 +/* Undefine the Status from Xlib since it will conflict with system headers on OSX */
1.37 +#if defined(__APPLE__) && defined(Status)
1.38 +#undef Status
1.39 +#endif
1.40 +
1.41 +#endif /* MOZ_X11 */
1.42 +
1.43 +#include <fontconfig/fontconfig.h>
1.44 +
1.45 +#include "nsMathUtils.h"
1.46 +
1.47 +#define GDK_PIXMAP_SIZE_MAX 32767
1.48 +
1.49 +using namespace mozilla;
1.50 +using namespace mozilla::gfx;
1.51 +using namespace mozilla::unicode;
1.52 +
1.53 +gfxFontconfigUtils *gfxPlatformGtk::sFontconfigUtils = nullptr;
1.54 +
1.55 +#if (MOZ_WIDGET_GTK == 2)
1.56 +static cairo_user_data_key_t cairo_gdk_drawable_key;
1.57 +#endif
1.58 +
1.59 +#ifdef MOZ_X11
1.60 + bool gfxPlatformGtk::sUseXRender = true;
1.61 +#endif
1.62 +
1.63 +gfxPlatformGtk::gfxPlatformGtk()
1.64 +{
1.65 + if (!sFontconfigUtils)
1.66 + sFontconfigUtils = gfxFontconfigUtils::GetFontconfigUtils();
1.67 +#ifdef MOZ_X11
1.68 + sUseXRender = mozilla::Preferences::GetBool("gfx.xrender.enabled");
1.69 +#endif
1.70 +
1.71 + uint32_t canvasMask = BackendTypeBit(BackendType::CAIRO) | BackendTypeBit(BackendType::SKIA);
1.72 + uint32_t contentMask = BackendTypeBit(BackendType::CAIRO) | BackendTypeBit(BackendType::SKIA);
1.73 + InitBackendPrefs(canvasMask, BackendType::CAIRO,
1.74 + contentMask, BackendType::CAIRO);
1.75 +}
1.76 +
1.77 +gfxPlatformGtk::~gfxPlatformGtk()
1.78 +{
1.79 + gfxFontconfigUtils::Shutdown();
1.80 + sFontconfigUtils = nullptr;
1.81 +
1.82 + gfxPangoFontGroup::Shutdown();
1.83 +}
1.84 +
1.85 +already_AddRefed<gfxASurface>
1.86 +gfxPlatformGtk::CreateOffscreenSurface(const IntSize& size,
1.87 + gfxContentType contentType)
1.88 +{
1.89 + nsRefPtr<gfxASurface> newSurface;
1.90 + bool needsClear = true;
1.91 + gfxImageFormat imageFormat = OptimalFormatForContent(contentType);
1.92 +#ifdef MOZ_X11
1.93 + // XXX we really need a different interface here, something that passes
1.94 + // in more context, including the display and/or target surface type that
1.95 + // we should try to match
1.96 + GdkScreen *gdkScreen = gdk_screen_get_default();
1.97 + if (gdkScreen) {
1.98 + if (UseXRender()) {
1.99 + Screen *screen = gdk_x11_screen_get_xscreen(gdkScreen);
1.100 + XRenderPictFormat* xrenderFormat =
1.101 + gfxXlibSurface::FindRenderFormat(DisplayOfScreen(screen),
1.102 + imageFormat);
1.103 +
1.104 + if (xrenderFormat) {
1.105 + newSurface = gfxXlibSurface::Create(screen, xrenderFormat,
1.106 + ThebesIntSize(size));
1.107 + }
1.108 + } else {
1.109 + // We're not going to use XRender, so we don't need to
1.110 + // search for a render format
1.111 + newSurface = new gfxImageSurface(ThebesIntSize(size), imageFormat);
1.112 + // The gfxImageSurface ctor zeroes this for us, no need to
1.113 + // waste time clearing again
1.114 + needsClear = false;
1.115 + }
1.116 + }
1.117 +#endif
1.118 +
1.119 + if (!newSurface) {
1.120 + // We couldn't create a native surface for whatever reason;
1.121 + // e.g., no display, no RENDER, bad size, etc.
1.122 + // Fall back to image surface for the data.
1.123 + newSurface = new gfxImageSurface(ThebesIntSize(size), imageFormat);
1.124 + }
1.125 +
1.126 + if (newSurface->CairoStatus()) {
1.127 + newSurface = nullptr; // surface isn't valid for some reason
1.128 + }
1.129 +
1.130 + if (newSurface && needsClear) {
1.131 + gfxContext tmpCtx(newSurface);
1.132 + tmpCtx.SetOperator(gfxContext::OPERATOR_CLEAR);
1.133 + tmpCtx.Paint();
1.134 + }
1.135 +
1.136 + return newSurface.forget();
1.137 +}
1.138 +
1.139 +nsresult
1.140 +gfxPlatformGtk::GetFontList(nsIAtom *aLangGroup,
1.141 + const nsACString& aGenericFamily,
1.142 + nsTArray<nsString>& aListOfFonts)
1.143 +{
1.144 + return sFontconfigUtils->GetFontList(aLangGroup, aGenericFamily,
1.145 + aListOfFonts);
1.146 +}
1.147 +
1.148 +nsresult
1.149 +gfxPlatformGtk::UpdateFontList()
1.150 +{
1.151 + return sFontconfigUtils->UpdateFontList();
1.152 +}
1.153 +
1.154 +nsresult
1.155 +gfxPlatformGtk::ResolveFontName(const nsAString& aFontName,
1.156 + FontResolverCallback aCallback,
1.157 + void *aClosure,
1.158 + bool& aAborted)
1.159 +{
1.160 + return sFontconfigUtils->ResolveFontName(aFontName, aCallback,
1.161 + aClosure, aAborted);
1.162 +}
1.163 +
1.164 +nsresult
1.165 +gfxPlatformGtk::GetStandardFamilyName(const nsAString& aFontName, nsAString& aFamilyName)
1.166 +{
1.167 + return sFontconfigUtils->GetStandardFamilyName(aFontName, aFamilyName);
1.168 +}
1.169 +
1.170 +gfxFontGroup *
1.171 +gfxPlatformGtk::CreateFontGroup(const nsAString &aFamilies,
1.172 + const gfxFontStyle *aStyle,
1.173 + gfxUserFontSet *aUserFontSet)
1.174 +{
1.175 + return new gfxPangoFontGroup(aFamilies, aStyle, aUserFontSet);
1.176 +}
1.177 +
1.178 +gfxFontEntry*
1.179 +gfxPlatformGtk::LookupLocalFont(const gfxProxyFontEntry *aProxyEntry,
1.180 + const nsAString& aFontName)
1.181 +{
1.182 + return gfxPangoFontGroup::NewFontEntry(*aProxyEntry, aFontName);
1.183 +}
1.184 +
1.185 +gfxFontEntry*
1.186 +gfxPlatformGtk::MakePlatformFont(const gfxProxyFontEntry *aProxyEntry,
1.187 + const uint8_t *aFontData, uint32_t aLength)
1.188 +{
1.189 + // passing ownership of the font data to the new font entry
1.190 + return gfxPangoFontGroup::NewFontEntry(*aProxyEntry,
1.191 + aFontData, aLength);
1.192 +}
1.193 +
1.194 +bool
1.195 +gfxPlatformGtk::IsFontFormatSupported(nsIURI *aFontURI, uint32_t aFormatFlags)
1.196 +{
1.197 + // check for strange format flags
1.198 + NS_ASSERTION(!(aFormatFlags & gfxUserFontSet::FLAG_FORMAT_NOT_USED),
1.199 + "strange font format hint set");
1.200 +
1.201 + // accept supported formats
1.202 + // Pango doesn't apply features from AAT TrueType extensions.
1.203 + // Assume that if this is the only SFNT format specified,
1.204 + // then AAT extensions are required for complex script support.
1.205 + if (aFormatFlags & (gfxUserFontSet::FLAG_FORMAT_WOFF |
1.206 + gfxUserFontSet::FLAG_FORMAT_OPENTYPE |
1.207 + gfxUserFontSet::FLAG_FORMAT_TRUETYPE)) {
1.208 + return true;
1.209 + }
1.210 +
1.211 + // reject all other formats, known and unknown
1.212 + if (aFormatFlags != 0) {
1.213 + return false;
1.214 + }
1.215 +
1.216 + // no format hint set, need to look at data
1.217 + return true;
1.218 +}
1.219 +
1.220 +static int32_t sDPI = 0;
1.221 +
1.222 +int32_t
1.223 +gfxPlatformGtk::GetDPI()
1.224 +{
1.225 + if (!sDPI) {
1.226 + // Make sure init is run so we have a resolution
1.227 + GdkScreen *screen = gdk_screen_get_default();
1.228 + gtk_settings_get_for_screen(screen);
1.229 + sDPI = int32_t(round(gdk_screen_get_resolution(screen)));
1.230 + if (sDPI <= 0) {
1.231 + // Fall back to something sane
1.232 + sDPI = 96;
1.233 + }
1.234 + }
1.235 + return sDPI;
1.236 +}
1.237 +
1.238 +gfxImageFormat
1.239 +gfxPlatformGtk::GetOffscreenFormat()
1.240 +{
1.241 + // Make sure there is a screen
1.242 + GdkScreen *screen = gdk_screen_get_default();
1.243 + if (screen && gdk_visual_get_depth(gdk_visual_get_system()) == 16) {
1.244 + return gfxImageFormat::RGB16_565;
1.245 + }
1.246 +
1.247 + return gfxImageFormat::RGB24;
1.248 +}
1.249 +
1.250 +static int sDepth = 0;
1.251 +
1.252 +int
1.253 +gfxPlatformGtk::GetScreenDepth() const
1.254 +{
1.255 + if (!sDepth) {
1.256 + GdkScreen *screen = gdk_screen_get_default();
1.257 + if (screen) {
1.258 + sDepth = gdk_visual_get_depth(gdk_visual_get_system());
1.259 + } else {
1.260 + sDepth = 24;
1.261 + }
1.262 +
1.263 + }
1.264 +
1.265 + return sDepth;
1.266 +}
1.267 +
1.268 +bool
1.269 +gfxPlatformGtk::SupportsOffMainThreadCompositing()
1.270 +{
1.271 + // Nightly builds have OMTC support by default for Electrolysis testing.
1.272 +#if defined(MOZ_X11) && !defined(NIGHTLY_BUILD)
1.273 + return (PR_GetEnv("MOZ_USE_OMTC") != nullptr) ||
1.274 + (PR_GetEnv("MOZ_OMTC_ENABLED") != nullptr);
1.275 +#else
1.276 + return true;
1.277 +#endif
1.278 +}
1.279 +
1.280 +void
1.281 +gfxPlatformGtk::GetPlatformCMSOutputProfile(void *&mem, size_t &size)
1.282 +{
1.283 + mem = nullptr;
1.284 + size = 0;
1.285 +
1.286 +#ifdef MOZ_X11
1.287 + const char EDID1_ATOM_NAME[] = "XFree86_DDC_EDID1_RAWDATA";
1.288 + const char ICC_PROFILE_ATOM_NAME[] = "_ICC_PROFILE";
1.289 +
1.290 + Atom edidAtom, iccAtom;
1.291 + Display *dpy = GDK_DISPLAY_XDISPLAY(gdk_display_get_default());
1.292 + // In xpcshell tests, we never initialize X and hence don't have a Display.
1.293 + // In this case, there's no output colour management to be done, so we just
1.294 + // return with nullptr.
1.295 + if (!dpy)
1.296 + return;
1.297 +
1.298 + Window root = gdk_x11_get_default_root_xwindow();
1.299 +
1.300 + Atom retAtom;
1.301 + int retFormat;
1.302 + unsigned long retLength, retAfter;
1.303 + unsigned char *retProperty ;
1.304 +
1.305 + iccAtom = XInternAtom(dpy, ICC_PROFILE_ATOM_NAME, TRUE);
1.306 + if (iccAtom) {
1.307 + // read once to get size, once for the data
1.308 + if (Success == XGetWindowProperty(dpy, root, iccAtom,
1.309 + 0, INT_MAX /* length */,
1.310 + False, AnyPropertyType,
1.311 + &retAtom, &retFormat, &retLength,
1.312 + &retAfter, &retProperty)) {
1.313 +
1.314 + if (retLength > 0) {
1.315 + void *buffer = malloc(retLength);
1.316 + if (buffer) {
1.317 + memcpy(buffer, retProperty, retLength);
1.318 + mem = buffer;
1.319 + size = retLength;
1.320 + }
1.321 + }
1.322 +
1.323 + XFree(retProperty);
1.324 + if (size > 0) {
1.325 +#ifdef DEBUG_tor
1.326 + fprintf(stderr,
1.327 + "ICM profile read from %s successfully\n",
1.328 + ICC_PROFILE_ATOM_NAME);
1.329 +#endif
1.330 + return;
1.331 + }
1.332 + }
1.333 + }
1.334 +
1.335 + edidAtom = XInternAtom(dpy, EDID1_ATOM_NAME, TRUE);
1.336 + if (edidAtom) {
1.337 + if (Success == XGetWindowProperty(dpy, root, edidAtom, 0, 32,
1.338 + False, AnyPropertyType,
1.339 + &retAtom, &retFormat, &retLength,
1.340 + &retAfter, &retProperty)) {
1.341 + double gamma;
1.342 + qcms_CIE_xyY whitePoint;
1.343 + qcms_CIE_xyYTRIPLE primaries;
1.344 +
1.345 + if (retLength != 128) {
1.346 +#ifdef DEBUG_tor
1.347 + fprintf(stderr, "Short EDID data\n");
1.348 +#endif
1.349 + return;
1.350 + }
1.351 +
1.352 + // Format documented in "VESA E-EDID Implementation Guide"
1.353 +
1.354 + gamma = (100 + retProperty[0x17]) / 100.0;
1.355 + whitePoint.x = ((retProperty[0x21] << 2) |
1.356 + (retProperty[0x1a] >> 2 & 3)) / 1024.0;
1.357 + whitePoint.y = ((retProperty[0x22] << 2) |
1.358 + (retProperty[0x1a] >> 0 & 3)) / 1024.0;
1.359 + whitePoint.Y = 1.0;
1.360 +
1.361 + primaries.red.x = ((retProperty[0x1b] << 2) |
1.362 + (retProperty[0x19] >> 6 & 3)) / 1024.0;
1.363 + primaries.red.y = ((retProperty[0x1c] << 2) |
1.364 + (retProperty[0x19] >> 4 & 3)) / 1024.0;
1.365 + primaries.red.Y = 1.0;
1.366 +
1.367 + primaries.green.x = ((retProperty[0x1d] << 2) |
1.368 + (retProperty[0x19] >> 2 & 3)) / 1024.0;
1.369 + primaries.green.y = ((retProperty[0x1e] << 2) |
1.370 + (retProperty[0x19] >> 0 & 3)) / 1024.0;
1.371 + primaries.green.Y = 1.0;
1.372 +
1.373 + primaries.blue.x = ((retProperty[0x1f] << 2) |
1.374 + (retProperty[0x1a] >> 6 & 3)) / 1024.0;
1.375 + primaries.blue.y = ((retProperty[0x20] << 2) |
1.376 + (retProperty[0x1a] >> 4 & 3)) / 1024.0;
1.377 + primaries.blue.Y = 1.0;
1.378 +
1.379 + XFree(retProperty);
1.380 +
1.381 +#ifdef DEBUG_tor
1.382 + fprintf(stderr, "EDID gamma: %f\n", gamma);
1.383 + fprintf(stderr, "EDID whitepoint: %f %f %f\n",
1.384 + whitePoint.x, whitePoint.y, whitePoint.Y);
1.385 + fprintf(stderr, "EDID primaries: [%f %f %f] [%f %f %f] [%f %f %f]\n",
1.386 + primaries.Red.x, primaries.Red.y, primaries.Red.Y,
1.387 + primaries.Green.x, primaries.Green.y, primaries.Green.Y,
1.388 + primaries.Blue.x, primaries.Blue.y, primaries.Blue.Y);
1.389 +#endif
1.390 +
1.391 + qcms_data_create_rgb_with_gamma(whitePoint, primaries, gamma, &mem, &size);
1.392 +
1.393 +#ifdef DEBUG_tor
1.394 + if (size > 0) {
1.395 + fprintf(stderr,
1.396 + "ICM profile read from %s successfully\n",
1.397 + EDID1_ATOM_NAME);
1.398 + }
1.399 +#endif
1.400 + }
1.401 + }
1.402 +#endif
1.403 +}
1.404 +
1.405 +
1.406 +#if (MOZ_WIDGET_GTK == 2)
1.407 +void
1.408 +gfxPlatformGtk::SetGdkDrawable(cairo_surface_t *target,
1.409 + GdkDrawable *drawable)
1.410 +{
1.411 + if (cairo_surface_status(target))
1.412 + return;
1.413 +
1.414 + g_object_ref(drawable);
1.415 +
1.416 + cairo_surface_set_user_data (target,
1.417 + &cairo_gdk_drawable_key,
1.418 + drawable,
1.419 + g_object_unref);
1.420 +}
1.421 +
1.422 +GdkDrawable *
1.423 +gfxPlatformGtk::GetGdkDrawable(cairo_surface_t *target)
1.424 +{
1.425 + if (cairo_surface_status(target))
1.426 + return nullptr;
1.427 +
1.428 + GdkDrawable *result;
1.429 +
1.430 + result = (GdkDrawable*) cairo_surface_get_user_data (target,
1.431 + &cairo_gdk_drawable_key);
1.432 + if (result)
1.433 + return result;
1.434 +
1.435 +#ifdef MOZ_X11
1.436 + if (cairo_surface_get_type(target) != CAIRO_SURFACE_TYPE_XLIB)
1.437 + return nullptr;
1.438 +
1.439 + // try looking it up in gdk's table
1.440 + result = (GdkDrawable*) gdk_xid_table_lookup(cairo_xlib_surface_get_drawable(target));
1.441 + if (result) {
1.442 + SetGdkDrawable(target, result);
1.443 + return result;
1.444 + }
1.445 +#endif
1.446 +
1.447 + return nullptr;
1.448 +}
1.449 +#endif
1.450 +
1.451 +TemporaryRef<ScaledFont>
1.452 +gfxPlatformGtk::GetScaledFontForFont(DrawTarget* aTarget, gfxFont *aFont)
1.453 +{
1.454 + return GetScaledFontForFontWithCairoSkia(aTarget, aFont);
1.455 +}
