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update comments to reflect reality (or at least planned behaviour).

Browse Source 
minor code cleanups



git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@96836 65c4cc65-6c06-0410-ace0-fbb531ad65f3
This commit is contained in:
Luigi Rizzo
2008-01-07 15:06:54 +00:00
parent eb86067cba
commit 17d76401f1
1 changed files with 84 additions and 81 deletions
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165
channels/console_gui.c
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@@ -4,6 +4,37 @@
* $Revision$
*/
/*
* GUI layout, structure and management
For the GUI we use SDL to create a large surface (gui->screen)
containing tree sections: remote video on the left, local video
on the right, and the keypad with all controls and text windows
in the center.
The central section is built using an image for the skin, fonts and
other GUI elements. Comments embedded in the image to indicate to
what function each area is mapped to.
Mouse and keyboard events are detected on the whole surface, and
handled differently according to their location:
- drag on the local video window are used to move the captured
area (in the case of X11 grabber) or the picture-in-picture
location (in case of camera included on the X11 grab).
- click on the keypad are mapped to the corresponding key;
- drag on some keypad areas (sliders etc.) are mapped to the
corresponding functions;
- keystrokes are used as keypad functions, or as text input
if we are in text-input mode.
Configuration options control the appeareance of the gui:
keypad = /tmp/phone.jpg ; the skin
keypad_font = /tmp/font.ttf ; the font to use for output (XXX deprecated)
*
*/
#include "asterisk.h"
#include "console_video.h"
#include "asterisk/lock.h"
@@ -11,11 +42,10 @@
#include "asterisk/utils.h" /* ast_calloc and ast_realloc */
#include <math.h> /* sqrt */
/* we support 3 regions in the GUI */
/* We use 3 'windows' in the GUI */
enum { WIN_LOCAL, WIN_REMOTE, WIN_KEYPAD, WIN_MAX };
#ifndef HAVE_SDL
/* stubs if we don't have any sdl */
#ifndef HAVE_SDL /* stubs if we don't have any sdl */
static void show_frame(struct video_desc *env, int out) {}
static void sdl_setup(struct video_desc *env) {}
static struct gui_info *cleanup_sdl(struct gui_info *gui) { return NULL; }
@@ -48,7 +78,21 @@ struct display_window {
};
#define GUI_BUFFER_LEN 256 /* buffer lenght used for input buffers */
struct keypad_entry; /* defined in console_gui.c */
/* Where do we send the keyboard/keypad output */
enum kb_output {
KO_NONE,
KO_INPUT, /* the local input window */
KO_DIALED, /* the 'dialed number' window */
};
enum drag_window { /* which window are we dragging */
DRAG_NONE,
DRAG_LOCAL, /* local video */
DRAG_REMOTE, /* remote video */
DRAG_DIALED, /* dialed number */
DRAG_INPUT, /* input window */
DRAG_MESSAGE, /* message window */
};
/*! \brief info related to the gui: button status, mouse coords, etc. */
struct gui_info {
@@ -56,8 +100,8 @@ struct gui_info {
int inbuf_pos; /* next free position in inbuf */
char msgbuf[GUI_BUFFER_LEN]; /* buffer for text-message buffer */
int msgbuf_pos; /* next free position in msgbuf */
int text_mode; /* switch to-dial and text-message mode */
int drag_mode; /* switch phone and drag-source mode */
enum kb_output kb_output; /* where the keyboard output goes */
enum drag_window drag_window; /* which window are we dragging */
int x_drag; /* x coordinate where the drag starts */
int y_drag; /* y coordinate where the drag starts */
#ifdef HAVE_SDL_TTF
@@ -67,7 +111,9 @@ struct gui_info {
SDL_Surface *screen; /* the main window */
int outfd; /* fd for output */
SDL_Surface *keypad; /* the pixmap for the keypad */
SDL_Surface *keypad; /* the skin for the keypad */
/* variable-size array mapping keypad regions to functions */
int kp_size, kp_used;
struct keypad_entry *kp;
@@ -171,51 +217,16 @@ static void show_frame(struct video_desc *env, int out)
}
/*
* GUI layout, structure and management
*
For the GUI we use SDL to create a large surface (gui->screen)
containing tree sections: remote video on the left, local video
on the right, and the keypad with all controls and text windows
in the center.
The central section is built using two images: one is the skin,
the other one is a mask where the sensitive areas of the skin
are colored in different grayscale levels according to their
functions. The mapping between colors and function is defined
in the 'enum pixel_value' below.
Mouse and keyboard events are detected on the whole surface, and
handled differently according to their location, as follows:
- drag on the local video window are used to move the captured
area (in the case of X11 grabber) or the picture-in-picture
location (in case of camera included on the X11 grab).
- click on the keypad are mapped to the corresponding key;
- drag on some keypad areas (sliders etc.) are mapped to the
corresponding functions;
- keystrokes are used as keypad functions, or as text input
if we are in text-input mode.
To manage these behavior we use two status variables,
that defines if keyboard events should be redirect to dialing functions
or to write message functions, and if mouse events should be used
to implement keypad functionalities or to drag the capture device.
Configuration options control the appeareance of the gui:
keypad = /tmp/phone.jpg ; the keypad on the screen
keypad_font = /tmp/font.ttf ; the font to use for output
*
* Identifier for each region of the main window.
* Values between 0 and 127 correspond to ASCII characters.
* The corresponding strings to be used in the skin comment section
* are defined in gui_key_map.
*/
/* enumerate for the pixel value. 0..127 correspond to ascii chars */
enum pixel_value {
/* answer/close functions */
KEY_PICK_UP = 128,
KEY_HANG_UP = 129,
/* other functions */
KEY_MUTE = 130,
KEY_AUTOANSWER = 131,
KEY_SENDVIDEO = 132,
@@ -224,20 +235,18 @@ enum pixel_value {
KEY_WRITEMESSAGE = 135,
KEY_GUI_CLOSE = 136, /* close gui */
/* other areas within the keypad */
KEY_DIGIT_BACKGROUND = 255,
/* areas outside the keypad - simulated */
KEY_OUT_OF_KEYPAD = 251,
KEY_REM_DPY = 252,
KEY_LOC_DPY = 253,
KEY_DIGIT_BACKGROUND = 255, /* other areas within the keypad */
};
/*
* Handlers for the various keypad functions
*/
/*! \brief append a character, or reset if '\0' */
/*! \brief append a character, or reset if c = '\0' */
static void append_char(char *str, int *str_pos, const char c)
{
int i = *str_pos;
@@ -251,6 +260,7 @@ static void append_char(char *str, int *str_pos, const char c)
*str_pos = i;
}
/*! \brief append string to a buffer */
static void append_string(char *str, int *str_pos, const char *s)
{
while (*s)
@@ -270,15 +280,6 @@ static void keypad_digit(struct video_desc *env, int digit)
}
}
/* this is a wrapper for actions that are available through the cli */
/* TODO append arg to command and send the resulting string as cli command */
static void keypad_send_command(struct video_desc *env, char *command)
{
ast_log(LOG_WARNING, "keypad_send_command(%s) called\n", command);
ast_cli_command(env->gui->outfd, command);
return;
}
/* function used to toggle on/off the status of some variables */
static char *keypad_toggle(struct video_desc *env, int index)
{
@@ -388,7 +389,7 @@ static int kp_match_area(const struct keypad_entry *e, int x, int y);
*
* x, y are referred to the upper left corner of the main SDL window.
*/
static void handle_button_event(struct video_desc *env, SDL_MouseButtonEvent button)
static void handle_mousedown(struct video_desc *env, SDL_MouseButtonEvent button)
{
uint8_t index = KEY_OUT_OF_KEYPAD; /* the key or region of the display we clicked on */
struct gui_info *gui = env->gui;
@@ -397,8 +398,8 @@ static void handle_button_event(struct video_desc *env, SDL_MouseButtonEvent but
ast_log(LOG_WARNING, "event %d %d have %d/%d regions at %p\n",
button.x, button.y, gui->kp_used, gui->kp_size, gui->kp);
#endif
/* for each click we come back in normal mode */
gui->text_mode = 0;
/* for each mousedown we end previous drag */
gui->drag_window = DRAG_NONE;
/* define keypad boundary */
if (button.x < env->rem_dpy.w)
@@ -442,11 +443,6 @@ static void handle_button_event(struct video_desc *env, SDL_MouseButtonEvent but
break;
case KEY_REMOTEVIDEO:
break;
case KEY_WRITEMESSAGE:
/* goes in text-mode */
env->gui->text_mode = 1;
break;
/* press outside the keypad. right increases size, center decreases, left drags */
case KEY_LOC_DPY:
@@ -457,7 +453,7 @@ static void handle_button_event(struct video_desc *env, SDL_MouseButtonEvent but
* and switch in drag mode */
env->gui->x_drag = button.x;
env->gui->y_drag = button.y;
env->gui->drag_mode = 1;
env->gui->drag_window = DRAG_LOCAL;
}
break;
} else {
@@ -485,24 +481,31 @@ static void handle_button_event(struct video_desc *env, SDL_MouseButtonEvent but
* depending on the text_mode variable value.
*
* key is the SDLKey structure corresponding to the key pressed.
* XXX needs to be cleaned up when handling returns etc.
*/
static void handle_keyboard_input(struct video_desc *env, SDLKey key)
{
struct gui_info *gui = env->gui;
if (gui->text_mode) {
switch (gui->kb_output) {
default:
break;
case KO_INPUT:
/* append in the text-message buffer */
if (key == SDLK_RETURN) {
/* send the text message and return in normal mode */
gui->text_mode = 0;
keypad_send_command(env, "send text");
gui->kb_output = KO_NONE;
ast_cli_command(gui->outfd, gui->msgbuf);
append_char(gui->msgbuf, &gui->msgbuf_pos, '\0');
} else {
/* accumulate the key in the message buffer */
append_char(gui->msgbuf, &gui->msgbuf_pos, key);
}
}
else {
break;
case KO_DIALED:
/* XXX actually, enter should be a 'console dial ' */
/* append in the dial buffer */
append_char(gui->inbuf, &gui->inbuf_pos, key);
break;
}
return;
@@ -571,16 +574,16 @@ static void eventhandler(struct video_desc *env, const char *caption)
handle_keyboard_input(env, ev[i].key.keysym.sym);
break;
case SDL_MOUSEMOTION:
if (gui->drag_mode != 0)
if (gui->drag_window == DRAG_LOCAL)
move_capture_source(env, ev[i].motion.x, ev[i].motion.y);
break;
case SDL_MOUSEBUTTONDOWN:
handle_button_event(env, ev[i].button);
handle_mousedown(env, ev[i].button);
break;
case SDL_MOUSEBUTTONUP:
if (gui->drag_mode != 0) {
if (gui->drag_window == DRAG_LOCAL) {
move_capture_source(env, ev[i].button.x, ev[i].button.y);
gui->drag_mode = 0;
gui->drag_window = DRAG_NONE;
}
break;
}
@@ -600,7 +603,7 @@ static void eventhandler(struct video_desc *env, const char *caption)
}
}
static SDL_Surface *get_keypad(const char *file)
static SDL_Surface *load_image(const char *file)
{
SDL_Surface *temp;
@@ -626,8 +629,8 @@ static struct gui_info *gui_init(const char *keypad_file)
if (gui == NULL)
return NULL;
/* initialize keypad status */
gui->text_mode = 0;
gui->drag_mode = 0;
gui->kb_output = KO_DIALED;
gui->drag_window = DRAG_NONE;
gui->outfd = -1;
/* initialize keyboard buffer */
@@ -692,7 +695,7 @@ static void keypad_setup(struct gui_info *gui, const char *kp_file)
if (gui->keypad)
return;
gui->keypad = get_keypad(kp_file);
gui->keypad = load_image(kp_file);
if (!gui->keypad)
return;
/* now try to read the keymap from the file. */