X11 hello world

LICENSE.md

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+MIT License
+
+Copyright (c) 2021 James Whiteman
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

README.md

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+# Develop
+If you are on Linux:
+- Navigate to command/linux in terminal.
+- Run `sh setup.sh` to setup your environment.
+- Run `sh rebuild.sh` to build the application.
+- Navigate to earn/ and run `executable` to run the built program.
+
+If you are on Windows:
+- Navigate to command/windows in command prompt.
+- Run `setup.bat` to setup your environment.
+- Run `rebuild.bat` to build the application.
+- Navigate to earn/ and run `executable.exe` to run the built program.

command/linux/rebuild.sh

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+#Global definitions.
+F_ROOT=$(readlink -f "$0")
+D_ROOT=$(dirname "${F_ROOT}")/../../.
+D_COMPILE=${D_ROOT}/compile
+D_LINK=${D_ROOT}/link
+D_EARN=${D_ROOT}/earn
+F_COMPILE_LIST=${D_COMPILE}/project_files.txt
+F_LINK_LIST=${D_LINK}/project_files.txt
+echo "" > ${F_LINK_LIST}
+
+# Compile.
+LINE=0
+LINE_COUNT=$(cat ${F_COMPILE_LIST} | wc -l)
+while true
+do
+	if [ ${LINE} -ge ${LINE_COUNT} ]; then
+		break
+	fi
+	LINE=$((LINE+1))
+	F_COMPILE=$(head -n ${LINE} ${F_COMPILE_LIST} | tail -n 1)
+	I_COMPILE=${D_COMPILE}/${F_COMPILE}
+	O_COMPILE=${D_LINK}/${F_COMPILE}.o
+	mkdir -p "${O_COMPILE%/*}" 
+	clang++ -I ${D_COMPILE} -c ${I_COMPILE} -o ${O_COMPILE}
+	echo ${O_COMPILE} >> ${F_LINK_LIST}
+done
+
+# Libraries.
+F_LIBRARY_LIST=${D_COMPILE}/libraries.txt
+F_LIBRARY_OPTIONS=${D_LINK}/library_options.txt
+echo "" > ${F_LIBRARY_OPTIONS}
+LINE=0
+LINE_COUNT=$(cat ${F_LIBRARY_LIST} | wc -l)
+while true
+do
+	if [ ${LINE} -ge ${LINE_COUNT} ]; then
+		break
+	fi
+	LINE=$((LINE+1))
+	LIBRARY="-l$(head -n ${LINE} ${F_LIBRARY_LIST}) "
+	echo $LIBRARY >> ${F_LIBRARY_OPTIONS}
+done
+
+# Link.
+I_LINK=$(cat ${F_LINK_LIST})
+I_LIBRARIES=$(cat ${F_LIBRARY_OPTIONS})
+O_LINK=${D_EARN}/executable
+clang++ ${I_LIBRARIES} ${I_LINK} -o ${O_LINK}

compile/controller/event.h

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+#ifndef CONTROLLER_EVENT
+#define CONTROLLER_EVENT
+enum controller_event_t {
+	start,
+	stop
+};
+#endif

compile/controller/root.cpp

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+#include "controller/root.h"
+#include <X11/Xlib.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+controller_status_t root_controller_t::on_event(controller_event_t event) {
+	Display *d;
+	Window w;
+	XEvent e;
+	const char *msg = "Hello, World!";
+	int s;
+
+	d = XOpenDisplay(NULL);
+	if (d == NULL) {
+		return controller_status_t::error;
+	}
+
+	s = DefaultScreen(d);
+	w = XCreateSimpleWindow(d, RootWindow(d, s), 10, 10, 100, 100, 1, BlackPixel(d, s), WhitePixel(d, s));
+	XSelectInput(d, w, ExposureMask | KeyPressMask);
+	XMapWindow(d, w);
+
+	while (true) {
+		XNextEvent(d, &e);
+		if (e.type == Expose) {
+			XFillRectangle(d, w, DefaultGC(d, s), 20, 20, 10, 10);
+			XDrawString(d, w, DefaultGC(d, s), 10, 50, msg, strlen(msg));
+		}
+		if (e.type == KeyPress)
+		break;
+	}
+
+	XCloseDisplay(d);
+	return controller_status_t::ok;
+}

compile/controller/root.h

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+#ifndef CONTROLLER_ROOT
+#define CONTROLLER_ROOT
+#include "controller/status.h"
+#include "controller/event.h"
+
+class root_controller_t {
+	public:
+
+	controller_status_t on_event(controller_event_t event);
+};
+#endif

compile/controller/status.h

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+#ifndef CONTROLLER_STATUS
+#define CONTROLLER_STATUS
+enum controller_status_t {
+	ok,
+	error
+};
+#endif

compile/libraries.txt

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+X11

compile/main.cpp

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+#include "controller/root.h"
+#include "controller/status.h"
+
+int main(int argc, char *argv[]) {
+	root_controller_t* controller = new root_controller_t();
+	controller_status_t status = controller->on_event(controller_event_t::start);
+	return status;
+}

compile/project_files.txt

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+main.cpp
+controller/root.cpp

link/library_options.txt

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+
+-lX11

link/project_files.txt

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+
+/home/cogentleman/main/art/cpp_launchpad/command/linux/../.././link/main.cpp.o
+/home/cogentleman/main/art/cpp_launchpad/command/linux/../.././link/controller/root.cpp.o