The first step is asking the user for the name of the file to open. QDebug() setPixmap(QPixmap::fromImage(image)) We want to implement the functionality of the on_actionOpen_triggered() slot. It's not necessary but we just want to have the same code in the Qt Example.ĭo the same to all the actions triggered.Īlso, we need to put the pointers to those actions into imageviewer.h:įrom this point, the remaining process is almost the same as the original Qt tutorial. Let's switch the name of the slot to open() as shown earlier in the equivalent code. Then, it will generate a code for us into imageviewer.cpp:ĭesigner also writes the slot declaration to the header file, imageviewer.h, as well. Right click on the openAtc in the Action Editor, and select "Go to slot." Let's open up Designer by double-clicking the imageviewer.ui to connect actions to slots. The equivalent code is shown below:Ĭonnect(openAct, SIGNAL(triggered()), this, SLOT(open())) Ĭonnect(printAct, SIGNAL(triggered()), this, SLOT(print())) Ĭonnect(exitAct, SIGNAL(triggered()), this, SLOT(close())) Ĭonnect(zoomInAct, SIGNAL(triggered()), this, SLOT(zoomIn())) Ĭonnect(zoomOutAct, SIGNAL(triggered()), this, SLOT(zoomOut())) Ĭonnect(normalSizeAct, SIGNAL(triggered()), this, SLOT(normalSize())) Ĭonnect(fitToWindowAct, SIGNAL(triggered()), this, SLOT(fitToWindow())) Ĭonnect(aboutAct, SIGNAL(triggered()), this, SLOT(about())) Ĭonnect(aboutQtAct, SIGNAL(triggered()), qApp, SLOT(aboutQt())) You should have received a copy of the GNU General Public License along with this program if not, write to the Free Software Foundation, Inc.We're going to connect each action to a appropriate slot using Qt Designer. See the GNU General Public License for more details. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY without even the implied warranty of MERCHANTABILITY or FITNESSįOR A PARTICULAR PURPOSE. This program is free software you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Softwareįoundation either version 2 of the License, or (at your option) any later version. That is obviously no problem for console logins, butĪny kind of a pseudo tty (xterm, ssh, screen. dev/ttyN) for sane console switch handling. On a private box it might be fine to handle it this way though.įbi also needs access to the linux console (i.e. Special files world writable, but be aware of the security implications this has. Some group, chown the special files to that group and put the users which are allowed to use the framebuffer device into the group. Most elegant way is to use pam_console (see /etc/security/console.perms) to chown the devices to the user logged in on the console. It does a lossless transformation of the image.įbi needs rw access to the framebuffer devices (/dev/fbN), i.e you (our your admin) have to make sure fbi can open the devices in rw mode. The rotate function actually works for JPEG images only. No safety bells: If you ask fbi to delete the image, it will be deleted without questions asked. This is done to avoid deleting images by mistake because there are L rotate 90° counter-clock wiseThe delete function actually wants a capital letter 'D', thus you have to type Shift+D. You have to start fbi with the -e switch to use them. Space key thing can be used to create a file list while reviewing the images and use the list for batch processing later on.įbi also provides some very basic image editing facilities. Timeout: load next image after >secg jump to image # Useful if the images you are watching text pages, all you have toĭo to get the next piece of text is to press space. Try to scroll down and go to the next image only if it is already on the bottom of the page. This has the effect that fbi will display large images without vertical offset (default is to center the images). Default is not to change the video mode.īe verbose: enable status line on the bottom of the screen.Įnable textreading mode. m mode name of the video mode to use (video mode must be listed in /etc/fb.modes).
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