X-Git-Url: http://git.mutantstargoat.com?p=winnie;a=blobdiff_plain;f=libwinnie%2Fsrc%2Ffbdev%2Fmouse.cc;fp=libwinnie%2Fsrc%2Ffbdev%2Fmouse.cc;h=1fb2d5599c6513e14b6fca3b60edb35f90149a62;hp=0000000000000000000000000000000000000000;hb=7b5d2df884abb7084d71f17cc29a618c0b6f47ef;hpb=b4c8d68e0357683cec82fb8a9c5a4447155b3192

diff --git a/libwinnie/src/fbdev/mouse.cc b/libwinnie/src/fbdev/mouse.cc
new file mode 100644
index 0000000..1fb2d55
--- /dev/null
+++ b/libwinnie/src/fbdev/mouse.cc
@@ -0,0 +1,202 @@
+/*
+winnie - an experimental window system
+
+Copyright (C) 2013 Eleni Maria Stea
+
+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 Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+Author: Eleni Maria Stea <elene.mst@gmail.com>
+*/
+
+#ifdef WINNIE_FBDEV
+#include <errno.h>
+#include <limits.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <fcntl.h>
+#include <sys/ioctl.h>
+#include <termios.h>
+#include <unistd.h>
+
+#include "geom.h"
+#include "gfx.h"
+#include "mouse.h"
+#include "shalloc.h"
+#include "window.h"
+#include "winnie.h"
+#include "wm.h"
+
+#define BN_LEFT		1
+#define BN_RIGHT	2
+#define BN_MIDDLE	4
+
+static int read_mouse();
+
+struct Mouse {
+	int dev_fd;
+	Rect bounds;
+	int pointer_x;
+	int pointer_y;
+	int bnstate;
+};
+
+static Mouse *mouse;
+
+bool init_mouse()
+{
+	if(!(mouse = (Mouse*)sh_malloc(sizeof *mouse))) {
+		return false;
+	}
+	get_subsys()->mouse_offset = (int)((char*)mouse - (char*)get_pool());
+	memset(mouse, 0, sizeof *mouse);
+
+	mouse->dev_fd = -1;
+
+	if((mouse->dev_fd = open("/dev/psaux", O_RDONLY | O_NONBLOCK)) == -1) {
+		fprintf(stderr, "Cannot open /dev/psaux : %s\n", strerror(errno));
+		return false;
+	}
+
+	set_mouse_bounds(get_screen_size());
+	return true;
+}
+
+void destroy_mouse()
+{
+	if(mouse->dev_fd != -1) {
+		close(mouse->dev_fd);
+		mouse->dev_fd = -1;
+	}
+	sh_free(mouse);
+}
+
+void set_mouse_bounds(const Rect &rect)
+{
+	mouse->bounds = rect;
+}
+
+int get_mouse_fd()
+{
+	return mouse->dev_fd;
+}
+
+void process_mouse_event()
+{
+	/* TODO:
+	 * - read all pending events from mouse fd (use O_NONBLOCK so that
+	 *   read will return -1 when there are no more events instead of blocking).
+	 */
+
+	int prev_state = mouse->bnstate;
+	int prev_x = mouse->pointer_x;
+	int prev_y = mouse->pointer_y;
+
+	if(read_mouse() == -1) {
+		return;
+	}
+
+	Window *top;
+	if(!(top = wm->get_grab_window())) {
+		top = wm->get_window_at_pos(mouse->pointer_x, mouse->pointer_y);
+		if(top) {
+			wm->set_focused_window(top);
+		}
+		else {
+			wm->set_focused_window(0);
+		}
+	}
+
+	 /* - send each pointer move and button press/release to the topmost window
+	 *   with the pointer on it.
+	 */
+
+	int dx = mouse->pointer_x - prev_x;
+	int dy = mouse->pointer_y - prev_y;
+
+	if((dx || dy) && top) {
+		MouseMotionFuncType motion_callback = top->get_mouse_motion_callback();
+		if(motion_callback) {
+			Rect rect = top->get_absolute_rect();
+			motion_callback(top, mouse->pointer_x - rect.x, mouse->pointer_y - rect.y);
+		}
+	}
+
+	MouseButtonFuncType button_callback;
+	if((mouse->bnstate != prev_state) && top && (button_callback = top->get_mouse_button_callback())) {
+		int num_bits = sizeof mouse->bnstate * CHAR_BIT;
+		for(int i=0; i<num_bits; i++) {
+			int s = (mouse->bnstate >> i) & 1;
+			int prev_s = (prev_state >> i) & 1;
+			if(s != prev_s) {
+				Rect rect = top->get_absolute_rect();
+				button_callback(top, i, s, mouse->pointer_x - rect.x, mouse->pointer_y - rect.y);
+			}
+		}
+	}
+}
+
+void get_pointer_pos(int *x, int *y)
+{
+	*x = mouse->pointer_x;
+	*y = mouse->pointer_y;
+}
+
+int get_button_state()
+{
+	return mouse->bnstate;
+}
+
+int get_button(int bn)
+{
+	if(bn < 0 || bn >= 3) {
+		return 0;
+	}
+	return (mouse->bnstate & (1 << bn)) != 0;
+}
+
+static int read_mouse()
+{
+	int rd;
+	signed char state[3] = {0, 0, 0};
+
+	if((rd = read(mouse->dev_fd, state, 3)) == -1) {
+		fprintf(stderr, "Unable to get mouse state : %s\n", strerror(errno));
+		return -1;
+	}
+
+	mouse->bnstate = state[0] & 7;
+	mouse->pointer_x += state[1];
+	mouse->pointer_y -= state[2];
+
+	if(mouse->pointer_x < mouse->bounds.x) {
+		mouse->pointer_x = mouse->bounds.x;
+	}
+
+	if(mouse->pointer_y < mouse->bounds.y) {
+		mouse->pointer_y = mouse->bounds.y;
+	}
+
+	if(mouse->pointer_x > mouse->bounds.x + mouse->bounds.width - 1) {
+		mouse->pointer_x = mouse->bounds.x + mouse->bounds.width - 1;
+	}
+
+	if(mouse->pointer_y > mouse->bounds.y + mouse->bounds.height - 1) {
+		mouse->pointer_y = mouse->bounds.y + mouse->bounds.height - 1;
+	}
+
+	return 0;
+}
+#endif // WINNIE_FBDEV