From 396f8c9fb5847c1959f1e18231969a923b9e6066 Mon Sep 17 00:00:00 2001 From: "Peter Åstrand (astrand)" Date: Tue, 20 Mar 2018 08:10:12 +0100 Subject: Disable outputs which are larger than the target framebuffer size Apparently this is not necessary when using the internal API, but a must with libXrandr. --- unix/common/randr.cxx | 22 +++++++++++++++++++++- 1 file changed, 21 insertions(+), 1 deletion(-) (limited to 'unix') diff --git a/unix/common/randr.cxx b/unix/common/randr.cxx index b0adc3fd..8514817c 100644 --- a/unix/common/randr.cxx +++ b/unix/common/randr.cxx @@ -30,6 +30,26 @@ #include static rfb::LogWriter vlog("RandR"); +static int ResizeScreen(int fb_width, int fb_height) +{ + /* + * Disable outputs which are larger than the target size + */ + for (int i = 0;i < vncRandRGetOutputCount();i++) { + int x, y, width, height; + if (vncRandRGetOutputDimensions(i, &x, &y, &width, &height) == 0) { + if (x + width > fb_width || y + height > fb_height) { + /* Currently ignoring errors */ + /* FIXME: Save output rotation and restore when configuring output */ + vncRandRDisableOutput(i); + } + } + } + + return vncRandRResizeScreen(fb_width, fb_height); +} + + rfb::ScreenSet computeScreenLayout(OutputIdMap *outputIdMap) { rfb::ScreenSet layout; @@ -120,7 +140,7 @@ unsigned int setScreenLayout(int fb_width, int fb_height, const rfb::ScreenSet& /* First we might need to resize the screen */ if ((fb_width != vncGetScreenWidth()) || (fb_height != vncGetScreenHeight())) { - ret = vncRandRResizeScreen(fb_width, fb_height); + ret = ResizeScreen(fb_width, fb_height); if (!ret) { vlog.error("Failed to resize screen to %dx%d", fb_width, fb_height); return rfb::resultInvalid; -- cgit v1.2.3