/*

* vim:ts=4:sw=4:expandtab

*

* © 2010 Michael Stapelberg

* © 2015 Cassandra Fox

* © 2021 Raymond Li

*

* See LICENSE for licensing information

*

*/

#include <stdbool.h>

#include <stdlib.h>

#include <stdio.h>

#include <string.h>

#include <math.h>

#include <xcb/xcb.h>

#include <xcb/randr.h>

#include <ev.h>

#include <cairo.h>

#include <cairo/cairo-xcb.h>

#include "i3lock.h"

#include "xcb.h"

#include "unlock_indicator.h"

#include "randr.h"

#include "dpi.h"

#include "tinyexpr.h"

#include "fonts.h"

/* clock stuff */

#include <time.h>

extern double circle_radius;

extern double ring_width;

#define BUTTON_RADIUS (circle_radius)

#define RING_WIDTH (ring_width)

#define BUTTON_SPACE (BUTTON_RADIUS + (RING_WIDTH / 2))

#define BUTTON_DIAMETER (2 * BUTTON_SPACE)

/*******************************************************************************

* Variables defined in i3lock.c.

******************************************************************************/

extern bool debug_mode;

/* The current position in the input buffer. Useful to determine if any

* characters of the password have already been entered or not. */

extern int input_position;

/* The lock window. */

extern xcb_window_t win;

/* The current resolution of the X11 root window. */

extern uint32_t last_resolution[2];

/* Whether the unlock indicator is enabled (defaults to true). */

extern bool unlock_indicator;

/* List of pressed modifiers, or NULL if none are pressed. */

extern char *modifier_string;

/* A Cairo surface containing the specified image (-i), if any. */

extern cairo_surface_t *img;

extern char *image_path;

extern char *slideshow_path;

extern char *img_slideshow[256];

extern cairo_surface_t *blur_bg_img;

extern int slideshow_image_count;

extern int slideshow_interval;

extern bool slideshow_random_selection;

int slideshow_image_now = 0;

unsigned long lastCheck;

/* How the background image should be displayed */

extern background_type_t bg_type;

/* The background color to use (in hex). */

extern char color[9];

/* indicator color options */

extern char insidevercolor[9];

extern char insidewrongcolor[9];

extern char insidecolor[9];

extern char ringvercolor[9];

extern char ringwrongcolor[9];

extern char ringcolor[9];

extern char linecolor[9];

extern char verifcolor[9];

extern char wrongcolor[9];

extern char layoutcolor[9];

extern char timecolor[9];

extern char datecolor[9];

extern char modifcolor[9];

extern char keyhlcolor[9];

extern char bshlcolor[9];

extern char separatorcolor[9];

extern char greetercolor[9];

extern int internal_line_source;

extern char verifoutlinecolor[9];

extern char wrongoutlinecolor[9];

extern char layoutoutlinecolor[9];

extern char timeoutlinecolor[9];

extern char dateoutlinecolor[9];

extern char greeteroutlinecolor[9];

extern char modifoutlinecolor[9];

extern int screen_number;

extern float refresh_rate;

extern bool show_clock;

extern bool always_show_clock;

extern bool show_indicator;

extern int verif_align;

extern int wrong_align;

extern int time_align;

extern int date_align;

extern int layout_align;

extern int modif_align;

extern int greeter_align;

extern char time_format[32];

extern char date_format[32];

extern char *fonts[6];

extern char ind_x_expr[32];

extern char ind_y_expr[32];

extern char time_x_expr[32];

extern char time_y_expr[32];

extern char date_x_expr[32];

extern char date_y_expr[32];

extern char layout_x_expr[32];

extern char layout_y_expr[32];

extern char status_x_expr[32];

extern char status_y_expr[32];

extern char verif_x_expr[32];

extern char verif_y_expr[32];

extern char wrong_x_expr[32];

extern char wrong_y_expr[32];

extern char modif_x_expr[32];

extern char modif_y_expr[32];

extern char greeter_x_expr[32];

extern char greeter_y_expr[32];

extern double time_size;

extern double date_size;

extern double verif_size;

extern double wrong_size;

extern double modifier_size;

extern double layout_size;

extern double greeter_size;

extern double timeoutlinewidth;

extern double dateoutlinewidth;

extern double verifoutlinewidth;

extern double wrongoutlinewidth;

extern double modifieroutlinewidth;

extern double layoutoutlinewidth;

extern double greeteroutlinewidth;

extern char *verif_text;

extern char *wrong_text;

extern char *noinput_text;

extern char *lock_text;

extern char *lock_failed_text;

extern char *layout_text;

extern char *greeter_text;

bool load_slideshow_images(const char *path);

cairo_surface_t* load_image(char* image_path);

/* Whether the failed attempts should be displayed. */

extern bool show_failed_attempts;

/* Number of failed unlock attempts. */

extern int failed_attempts;

/*******************************************************************************

* Variables defined in xcb.c.

******************************************************************************/

/* The root screen, to determine the DPI. */

extern xcb_screen_t *screen;

/*******************************************************************************

* Local variables.

******************************************************************************/

/* time stuff */

static struct ev_periodic *time_redraw_tick;

/* Cache the screen’s visual, necessary for creating a Cairo context. */

static xcb_visualtype_t *vistype;

int current_slideshow_index = 0;

/* Maintain the current unlock/PAM state to draw the appropriate unlock

* indicator. */

unlock_state_t unlock_state;

auth_state_t auth_state;

// color arrays

rgba_t insidever16;

rgba_t insidewrong16;

rgba_t inside16;

rgba_t ringver16;

rgba_t ringwrong16;

rgba_t ring16;

rgba_t line16;

rgba_t verif16;

rgba_t wrong16;

rgba_t layout16;

rgba_t time16;

rgba_t date16;

rgba_t modif16;

rgba_t keyhl16;

rgba_t bshl16;

rgba_t sep16;

rgba_t bar16;

rgba_t greeter16;

rgba_t background;

rgba_t verifoutline16;

rgba_t wrongoutline16;

rgba_t layoutoutline16;

rgba_t timeoutline16;

rgba_t dateoutline16;

rgba_t greeteroutline16;

rgba_t modifoutline16;

// experimental bar stuff

#define BAR_VERT 0

#define BAR_FLAT 1

// experimental bar stuff

extern bool bar_enabled;

extern double *bar_heights;

extern double bar_step;

extern double bar_base_height;

extern double bar_periodic_step;

extern double max_bar_height;

extern double bar_position;

extern int bar_count;

extern int bar_orientation;

extern char bar_base_color[9];

extern char bar_x_expr[32];

extern char bar_y_expr[32];

extern char bar_width_expr[32];

extern bool bar_bidirectional;

extern bool bar_reversed;

static cairo_font_face_t *font_faces[6] = {

NULL,

NULL,

NULL,

NULL,

NULL,

NULL,

};

static control_char_config_t control_characters[] = {

{'\n', CC_POS_RESET, 0, CC_POS_CHANGE, 1},

{'\b', CC_POS_CHANGE, -1, CC_POS_KEEP, 0},

{'\r', CC_POS_RESET, 0, CC_POS_KEEP, 0},

{'\t', CC_POS_TAB, 4, CC_POS_KEEP, 0},

};

size_t control_char_count = sizeof control_characters / sizeof(control_char_config_t);

static cairo_font_face_t *get_font_face(int which) {

if (font_faces[which]) {

return font_faces[which];

}

const unsigned char *face_name = (const unsigned char *)fonts[which];

FcResult result;

/*

* Loads the default config.

* On successive calls, does no work and just returns true.

*/

if (!FcInit()) {

DEBUG("Fontconfig init failed. No text will be shown.\n");

return NULL;

}

/*

* converts a font face name to a pattern for that face name

*/

FcPattern *pattern = FcNameParse(face_name);

if (!pattern) {

DEBUG("no sans-serif font available\n");

return NULL;

}

/*

* Gets the default font for our pattern. (Gets the default sans-serif font face)

* Without these two calls, the FcFontMatch call will fail due to FcConfigGetCurrent()

* not giving it a valid/useful config.

*/

FcDefaultSubstitute(pattern);

if (!FcConfigSubstitute(FcConfigGetCurrent(), pattern, FcMatchPattern)) {

DEBUG("config sub failed?\n");

return NULL;

}

/*

* Looks up the font pattern and does some internal RenderPrepare work,

* then returns the resulting pattern that's ready for rendering.

*/

FcPattern *pattern_ready = FcFontMatch(FcConfigGetCurrent(), pattern, &result);

FcPatternDestroy(pattern);

pattern = NULL;

if (!pattern_ready) {

DEBUG("no sans-serif font available\n");

return NULL;

}

/*

* Passes the given pattern into cairo, which loads it into a cairo freetype font face.

* Increment its reference count and cache it.

*/

cairo_font_face_t *face = cairo_ft_font_face_create_for_pattern(pattern_ready);

FcPatternDestroy(pattern_ready);

font_faces[which] = cairo_font_face_reference(face);

FcFini();

return face;

}

/*

* Splits the given text by "control chars",

* And then draws the given text onto the cairo context.

*/

static void draw_text_with_cc(cairo_t *ctx, text_t text, double start_x) {

// get scaled_font

cairo_scaled_font_t *sft;

cairo_matrix_t fm, ctm;

cairo_matrix_init_scale(&fm, text.size, text.size);

cairo_get_matrix(ctx, &ctm);

cairo_font_options_t *opts;

opts = cairo_font_options_create();

sft = cairo_scaled_font_create(text.font, &fm, &ctm, opts);

cairo_font_options_destroy(opts);

/* use `a` to represent common character width, using in `\t` */

cairo_text_extents_t te;

cairo_text_extents(ctx, "a", &te);

// convert text to glyphs.

cairo_status_t status;

cairo_glyph_t* glyphs;

int nglyphs = 0,

len = 0,

start = 0,

lineno = 0,

x = start_x,

y = text.y;

size_t cur_cc;

while (text.str[start + len] != '\0') {

char is_cc = 0;

do {

for (cur_cc = 0; cur_cc < control_char_count; cur_cc++) {

if (text.str[start+len] == control_characters[cur_cc].character) {

is_cc = 1;

break;

}

}

} while (text.str[start+(len++)] != '\0' && !is_cc);

if (len > is_cc) {

status = cairo_scaled_font_text_to_glyphs(

sft, x, y, text.str + start, is_cc ? len - 1: len,

&glyphs, &nglyphs,

NULL, NULL, NULL

);

if (status == CAIRO_STATUS_SUCCESS) {

cairo_glyph_path(ctx, glyphs, nglyphs);

} else {

DEBUG("draw %c failed\n", text.str[start]);

}

}

if (is_cc && (cur_cc < control_char_count)) {

if (control_characters[cur_cc].x_behavior == CC_POS_CHANGE) {

char x_offset = control_characters[cur_cc].x_behavior_arg;

if (x_offset < 0 && x_offset > -nglyphs) {

x = glyphs[nglyphs+x_offset].x;

} else if (x_offset > 0) {

if (nglyphs >= 1) { // the case is some leading control chars.(although there is none now)

x = glyphs[nglyphs - 1].x + x_offset * te.x_advance;

} else { // deal the leading control chars.

x += x_offset * te.x_advance;

}

}

} else if (control_characters[cur_cc].x_behavior == CC_POS_RESET) {

x = start_x;

} else if (control_characters[cur_cc].x_behavior == CC_POS_TAB) {

if (nglyphs > 0) { // there may be leading tab, such as '\t\t' or '\n\t'

int advance = control_characters[cur_cc].x_behavior_arg - ((nglyphs - 1) % control_characters[cur_cc].x_behavior_arg);

x = glyphs[nglyphs - 1].x + advance * te.x_advance;

} else { // deal the leading tab.

x += control_characters[cur_cc].x_behavior_arg * te.x_advance;

}

}

if (control_characters[cur_cc].y_behavior == CC_POS_CHANGE) {

lineno += control_characters[cur_cc].y_behavior_arg;

} // CC_POS_KEEP is default for y

}

y = text.y + text.size * lineno;

if (len > is_cc) {

cairo_glyph_free(glyphs);

}

nglyphs = 0;

start += len;

len = 0;

}

cairo_scaled_font_destroy(sft);

}

/*

* Draws the given text onto the cairo context

*/

static void draw_text(cairo_t *ctx, text_t text) {

if (!text.show)

return;

cairo_text_extents_t extents;

cairo_set_font_face(ctx, text.font);

cairo_set_font_size(ctx, text.size);

cairo_text_extents(ctx, text.str, &extents);

double x;

switch (text.align) {

case 1:

x = text.x;

break;

case 2:

x = text.x - (extents.width + extents.x_bearing);

break;

case 0:

default:

x = text.x - extents.x_advance / 2;

break;

}

cairo_set_source_rgba(ctx, text.color.red, text.color.green, text.color.blue, text.color.alpha);

draw_text_with_cc(ctx, text, x);

cairo_fill_preserve(ctx);

cairo_set_source_rgba(ctx, text.outline_color.red, text.outline_color.green, text.outline_color.blue, text.outline_color.alpha);

cairo_set_line_width(ctx, text.outline_width);

cairo_stroke(ctx);

}

static void draw_single_bar(cairo_t *ctx, double pos, double offset, double width, double height) {

if (bar_reversed) {

offset -= height;

} else if (bar_bidirectional) {

offset -= height / 2;

}

if (bar_orientation == BAR_VERT)

cairo_rectangle(ctx, offset, pos, height, width);

else

cairo_rectangle(ctx, pos, offset, width, height);

cairo_fill(ctx);

}

static void draw_bar(cairo_t *ctx, double bar_x, double bar_y, double bar_width, double screen_x, double screen_y) {

cairo_save(ctx);

switch (auth_state) {

case STATE_AUTH_VERIFY:

case STATE_AUTH_LOCK:

cairo_set_source_rgba(ctx, ringver16.red, ringver16.green, ringver16.blue, ringver16.alpha);

break;

case STATE_AUTH_WRONG:

case STATE_I3LOCK_LOCK_FAILED:

cairo_set_source_rgba(ctx, ringwrong16.red, ringwrong16.green, ringwrong16.blue, ringwrong16.alpha);

break;

default:

cairo_set_source_rgba(ctx, bar16.red, bar16.green, bar16.blue, bar16.alpha);

break;

}

if (bar_orientation == BAR_VERT)

draw_single_bar(ctx, bar_y, bar_x, bar_width, bar_base_height);

else

draw_single_bar(ctx, bar_x, bar_y, bar_width, bar_base_height);

if (unlock_state == STATE_BACKSPACE_ACTIVE)

cairo_set_source_rgba(ctx, bshl16.red, bshl16.green, bshl16.blue, bshl16.alpha);

else

cairo_set_source_rgba(ctx, keyhl16.red, keyhl16.green, keyhl16.blue, keyhl16.alpha);

cairo_set_operator(ctx, CAIRO_OPERATOR_SOURCE);

double base_width = bar_width / bar_count;

double bar_pos, bar_offset;

if (bar_orientation == BAR_VERT) {

bar_pos = bar_y;

bar_offset = bar_x;

} else {

bar_pos = bar_x;

bar_offset = bar_y;

}

for (int i = 0; i < bar_count; ++i) {

double bar_height = bar_heights[i];

if (bar_bidirectional) bar_height *= 2;

if (bar_height > 0) {

draw_single_bar(ctx, bar_pos + i * base_width, bar_offset, base_width, bar_height);

}

}

for (int i = 0; i < bar_count; ++i) {

if (bar_heights[i] > 0) {

bar_heights[i] -= bar_periodic_step;

}

}

cairo_restore(ctx);

}

static void draw_indic(cairo_t *ctx, double ind_x, double ind_y) {

if (unlock_indicator &&

(unlock_state >= STATE_KEY_PRESSED || auth_state > STATE_AUTH_IDLE || show_indicator)) {

/* Draw a (centered) circle with transparent background. */

cairo_set_line_width(ctx, RING_WIDTH);

cairo_arc(ctx, ind_x, ind_y, BUTTON_RADIUS, 0, 2 * M_PI);

/* Use the appropriate color for the different PAM states

* (currently verifying, wrong password, or default) */

switch (auth_state) {

case STATE_AUTH_VERIFY:

case STATE_AUTH_LOCK:

cairo_set_source_rgba(ctx, insidever16.red, insidever16.green, insidever16.blue, insidever16.alpha);

break;

case STATE_AUTH_WRONG:

case STATE_I3LOCK_LOCK_FAILED:

cairo_set_source_rgba(ctx, insidewrong16.red, insidewrong16.green, insidewrong16.blue, insidewrong16.alpha);

break;

default:

if (unlock_state == STATE_NOTHING_TO_DELETE) {

cairo_set_source_rgba(ctx, insidewrong16.red, insidewrong16.green, insidewrong16.blue, insidewrong16.alpha);

break;

}

cairo_set_source_rgba(ctx, inside16.red, inside16.green, inside16.blue, inside16.alpha);

break;

}

cairo_fill_preserve(ctx);

switch (auth_state) {

case STATE_AUTH_VERIFY:

case STATE_AUTH_LOCK:

cairo_set_source_rgba(ctx, ringver16.red, ringver16.green, ringver16.blue, ringver16.alpha);

if (internal_line_source == 1) {

line16.red = ringver16.red;

line16.green = ringver16.green;

line16.blue = ringver16.blue;

line16.alpha = ringver16.alpha;

}

break;

case STATE_AUTH_WRONG:

case STATE_I3LOCK_LOCK_FAILED:

cairo_set_source_rgba(ctx, ringwrong16.red, ringwrong16.green, ringwrong16.blue, ringwrong16.alpha);

if (internal_line_source == 1) {

line16.red = ringwrong16.red;

line16.green = ringwrong16.green;

line16.blue = ringwrong16.blue;

line16.alpha = ringwrong16.alpha;

}

break;

case STATE_AUTH_IDLE:

if (unlock_state == STATE_NOTHING_TO_DELETE) {

cairo_set_source_rgba(ctx, ringwrong16.red, ringwrong16.green, ringwrong16.blue, ringwrong16.alpha);

if (internal_line_source == 1) {

line16.red = ringwrong16.red;

line16.green = ringwrong16.green;

line16.blue = ringwrong16.blue;

line16.alpha = ringwrong16.alpha;

}

break;

}

cairo_set_source_rgba(ctx, ring16.red, ring16.green, ring16.blue, ring16.alpha);

if (internal_line_source == 1) {

line16.red = ring16.red;

line16.green = ring16.green;

line16.blue = ring16.blue;

line16.alpha = ring16.alpha;

}

break;

}

cairo_stroke(ctx);

/* Draw an inner separator line. */

if (internal_line_source != 2) { //pretty sure this only needs drawn if it's being drawn over the inside?

cairo_set_source_rgba(ctx, line16.red, line16.green, line16.blue, line16.alpha);

cairo_set_line_width(ctx, 2.0);

cairo_arc(ctx, ind_x, ind_y, BUTTON_RADIUS - 5, 0, 2 * M_PI);

cairo_stroke(ctx);

}

if (unlock_state == STATE_KEY_ACTIVE || unlock_state == STATE_BACKSPACE_ACTIVE) {

cairo_set_line_width(ctx, RING_WIDTH);

cairo_new_sub_path(ctx);

double highlight_start = (rand() % (int)(2 * M_PI * 100)) / 100.0;

cairo_arc(ctx, ind_x, ind_y, BUTTON_RADIUS,

highlight_start, highlight_start + (M_PI / 3.0));

if (unlock_state == STATE_KEY_ACTIVE) {

/* For normal keys, we use a lighter green. */

cairo_set_source_rgba(ctx, keyhl16.red, keyhl16.green, keyhl16.blue, keyhl16.alpha);

} else {

/* For backspace, we use red. */

cairo_set_source_rgba(ctx, bshl16.red, bshl16.green, bshl16.blue, bshl16.alpha);

}

cairo_stroke(ctx);

/* Draw two little separators for the highlighted part of the

* unlock indicator. */

cairo_set_source_rgba(ctx, sep16.red, sep16.green, sep16.blue, sep16.alpha);

cairo_arc(ctx, ind_x, ind_y, BUTTON_RADIUS,

highlight_start, highlight_start + (M_PI / 128.0));

cairo_stroke(ctx);

cairo_arc(ctx, ind_x, ind_y, BUTTON_RADIUS,

(highlight_start + (M_PI / 3.0)) - (M_PI / 128.0),

highlight_start + (M_PI / 3.0));

cairo_stroke(ctx);

}

}

}

/*

* Initialize all the color arrays once.

* Called once after options are parsed.

*/

/*

colorstring: 8-character RGBA string ("ff0000ff", "00000000", "ffffffff", etc)

colorstring16: array of 4 integers (r, g, b, a).

MAKE_COLORGROUPS(colorstring, colorstring16) =>

char colorstring_tmparr[4][3] = {{colorstring[0], colorstring[1], '\0'},

{colorstring[2], colorstring[3], '\0'},

{colorstring[4], colorstring[5], '\0'},

{colorstring[6], colorstring[7], '\0'}};

uint32_t colorstring16[4] = {(strtol(colorstring_tmparr[0], NULL, 16)),

(strtol(colorstring_tmparr[1], NULL, 16)),

(strtol(colorstring_tmparr[2], NULL, 16)),

(strtol(colorstring_tmparr[3], NULL, 16))};

*/

static void set_color(char *dest, const char *src, int offset) {

dest[0] = src[offset];

dest[1] = src[offset + 1];

dest[2] = '\0';

}

static void colorgen(rgba_str_t *tmp, const char *src, rgba_t *dest) {

set_color(tmp->red, src, 0);

set_color(tmp->green, src, 2);

set_color(tmp->blue, src, 4);

set_color(tmp->alpha, src, 6);

dest->red = strtol(tmp->red, NULL, 16) / 255.0;

dest->green = strtol(tmp->green, NULL, 16) / 255.0;

dest->blue = strtol(tmp->blue, NULL, 16) / 255.0;

dest->alpha = strtol(tmp->alpha, NULL, 16) / 255.0;

}

void init_colors_once(void) {

/* initialize for slideshow time interval */

lastCheck = (unsigned long)time(NULL);

rgba_str_t tmp;

/* build indicator color arrays */

colorgen(&tmp, insidevercolor, &insidever16);

colorgen(&tmp, insidewrongcolor, &insidewrong16);

colorgen(&tmp, insidecolor, &inside16);

colorgen(&tmp, ringvercolor, &ringver16);

colorgen(&tmp, ringwrongcolor, &ringwrong16);

colorgen(&tmp, ringcolor, &ring16);

colorgen(&tmp, linecolor, &line16);

colorgen(&tmp, verifcolor, &verif16);

colorgen(&tmp, wrongcolor, &wrong16);

colorgen(&tmp, layoutcolor, &layout16);

colorgen(&tmp, timecolor, &time16);

colorgen(&tmp, datecolor, &date16);

colorgen(&tmp, modifcolor, &modif16);

colorgen(&tmp, keyhlcolor, &keyhl16);

colorgen(&tmp, bshlcolor, &bshl16);

colorgen(&tmp, separatorcolor, &sep16);

colorgen(&tmp, bar_base_color, &bar16);

colorgen(&tmp, greetercolor, &greeter16);

colorgen(&tmp, color, &background);

colorgen(&tmp, verifoutlinecolor, &verifoutline16);

colorgen(&tmp, wrongoutlinecolor, &wrongoutline16);

colorgen(&tmp, layoutoutlinecolor, &layoutoutline16);

colorgen(&tmp, timeoutlinecolor, &timeoutline16);

colorgen(&tmp, dateoutlinecolor, &dateoutline16);

colorgen(&tmp, greeteroutlinecolor, &greeteroutline16);

colorgen(&tmp, modifoutlinecolor, &modifoutline16);

}

static te_expr *compile_expression(const char *const from, const char *expression, const te_variable *variables, int var_count) {

int te_err = 0;

te_expr *expr = te_compile(expression, variables, var_count, &te_err);

if (te_err) {

fprintf(stderr, "Failed to reason about '%s' given by '%s'\n", expression, from);

exit(EXIT_FAILURE);

}

return expr;

}

static DrawData create_draw_data() {

DrawData draw_data;

memset(&draw_data, 0, sizeof(DrawData));

return draw_data;

}

static void draw_elements(cairo_t *const ctx, DrawData const *const draw_data) {

// indicator stuff

if (!bar_enabled) {

draw_indic(ctx, draw_data->indicator_x, draw_data->indicator_y);

} else {

if (unlock_state == STATE_KEY_ACTIVE ||

unlock_state == STATE_BACKSPACE_ACTIVE) {

// note: might be biased to cause more hits on lower indices

// maybe see about doing ((double) rand() / RAND_MAX) * bar_count

int index = rand() % bar_count;

bar_heights[index] = max_bar_height;

for (int i = 0; i < ((max_bar_height / bar_step) + 1); ++i) {

int low_ind = index - i;

while (low_ind < 0) {

low_ind += bar_count;

}

int high_ind = (index + i) % bar_count;

int tmp_height = max_bar_height - (bar_step * i);

if (tmp_height < 0)

tmp_height = 0;

if (bar_heights[low_ind] < tmp_height)

bar_heights[low_ind] = tmp_height;

if (bar_heights[high_ind] < tmp_height)

bar_heights[high_ind] = tmp_height;

if (tmp_height == 0)

break;

}

}

draw_bar(ctx, draw_data->bar_x, draw_data->bar_y, draw_data->bar_width, draw_data->screen_x, draw_data->screen_y);

}

draw_text(ctx, draw_data->status_text);

draw_text(ctx, draw_data->keylayout_text);

draw_text(ctx, draw_data->mod_text);

draw_text(ctx, draw_data->time_text);

draw_text(ctx, draw_data->date_text);

draw_text(ctx, draw_data->greeter_text);

}

/*

* Renders the lock screen on the provided drawable with the given resolution.

*/

void render_lock(uint32_t *resolution, xcb_drawable_t drawable) {

const double scaling_factor = get_dpi_value() / 96.0;

int button_diameter_physical = ceil(scaling_factor * BUTTON_DIAMETER);

DEBUG("scaling_factor is %.f, physical diameter is %d px\n",

scaling_factor, button_diameter_physical);

if (!vistype)

vistype = get_visualtype_by_depth(32, screen);

/* Initialize cairo: Create one in-memory surface to render the unlock

* indicator on, create one XCB surface to actually draw (one or more,

* depending on the amount of screens) unlock indicators on.

* create two more surfaces for time and date display

*/

cairo_surface_t *output = cairo_image_surface_create(CAIRO_FORMAT_ARGB32, resolution[0], resolution[1]);

cairo_t *ctx = cairo_create(output);

cairo_scale(ctx, scaling_factor, scaling_factor);

// cairo_set_font_face(ctx, get_font_face(0));

cairo_surface_t *xcb_output = cairo_xcb_surface_create(conn, drawable, vistype, resolution[0], resolution[1]);

cairo_t *xcb_ctx = cairo_create(xcb_output);

/*update image according to the slideshow_interval*/

if (slideshow_image_count > 0) {

unsigned long now = (unsigned long)time(NULL);

if (img == NULL || now - lastCheck >= slideshow_interval) {

if (slideshow_random_selection) {

img = load_image(img_slideshow[rand() % slideshow_image_count]);

} else {

img = load_image(img_slideshow[current_slideshow_index]);

}

current_slideshow_index++;

if (current_slideshow_index >= slideshow_image_count) {

current_slideshow_index = 0;

load_slideshow_images(slideshow_path);

}

lastCheck = now;

}

}

if (blur_bg_img) {

cairo_set_source_surface(xcb_ctx, blur_bg_img, 0, 0);

cairo_paint(xcb_ctx);

} else {

cairo_set_source_rgba(xcb_ctx, background.red, background.green, background.blue, background.alpha);

cairo_rectangle(xcb_ctx, 0, 0, resolution[0], resolution[1]);

cairo_fill(xcb_ctx);

}

if (img) {

draw_image(resolution, img, xcb_ctx);

}

/*

* gen text

* calc vars

* process if keystroke or not

* draw indicator

* draw text

*/

DrawData draw_data = create_draw_data();

if (unlock_indicator &&

(unlock_state >= STATE_KEY_PRESSED || auth_state > STATE_AUTH_IDLE || show_indicator)) {

switch (auth_state) {

case STATE_AUTH_VERIFY:

draw_data.status_text.show = true;

strncpy(draw_data.status_text.str, verif_text, sizeof(draw_data.status_text.str) - 1);

draw_data.status_text.font = get_font_face(VERIF_FONT);

draw_data.status_text.color = verif16;

draw_data.status_text.outline_color = verifoutline16;

draw_data.status_text.size = verif_size;

draw_data.status_text.outline_width = verifoutlinewidth;

draw_data.status_text.align = verif_align;

break;

case STATE_AUTH_LOCK:

draw_data.status_text.show = true;

strncpy(draw_data.status_text.str, lock_text, sizeof(draw_data.status_text.str) - 1);

draw_data.status_text.font = get_font_face(VERIF_FONT);

draw_data.status_text.color = verif16;

draw_data.status_text.outline_color = verifoutline16;

draw_data.status_text.size = verif_size;

draw_data.status_text.outline_width = verifoutlinewidth;

draw_data.status_text.align = verif_align;

break;

case STATE_AUTH_WRONG:

draw_data.status_text.show = true;

strncpy(draw_data.status_text.str, wrong_text, sizeof(draw_data.status_text.str) - 1);

draw_data.status_text.font = get_font_face(WRONG_FONT);

draw_data.status_text.color = wrong16;

draw_data.status_text.outline_color = wrongoutline16;

draw_data.status_text.size = wrong_size;

draw_data.status_text.outline_width = wrongoutlinewidth;

draw_data.status_text.align = wrong_align;

break;

case STATE_I3LOCK_LOCK_FAILED:

draw_data.status_text.show = true;

strncpy(draw_data.status_text.str, lock_failed_text, sizeof(draw_data.status_text.str) - 1);

draw_data.status_text.font = get_font_face(WRONG_FONT);

draw_data.status_text.color = wrong16;

draw_data.status_text.outline_color = wrongoutline16;

draw_data.status_text.size = wrong_size;

draw_data.status_text.outline_width = wrongoutlinewidth;

draw_data.status_text.align = wrong_align;

break;

default:

if (unlock_state == STATE_NOTHING_TO_DELETE) {

draw_data.status_text.show = true;

strncpy(draw_data.status_text.str, noinput_text, sizeof(draw_data.status_text.str) - 1);

draw_data.status_text.font = get_font_face(WRONG_FONT);

draw_data.status_text.color = wrong16;

draw_data.status_text.outline_color = wrongoutline16;

draw_data.status_text.size = wrong_size;

draw_data.status_text.outline_width = wrongoutlinewidth;

draw_data.status_text.align = wrong_align;

break;

}

if (show_failed_attempts && failed_attempts > 0) {

draw_data.status_text.show = true;

draw_data.status_text.font = get_font_face(WRONG_FONT);

draw_data.status_text.color = wrong16;

draw_data.status_text.outline_color = wrongoutline16;

draw_data.status_text.size = wrong_size;

draw_data.status_text.outline_width = wrongoutlinewidth;

draw_data.status_text.align = wrong_align;

// TODO: variable for this

draw_data.status_text.size = 32.0;

if (failed_attempts > 999) {

strncpy(draw_data.status_text.str, "> 999", sizeof(draw_data.status_text.str));

} else {

snprintf(draw_data.status_text.str, sizeof(draw_data.status_text.str), "%d", failed_attempts);

}

}

break;

}

}

if (modifier_string) {

draw_data.mod_text.show = true;

strncpy(draw_data.mod_text.str, modifier_string, sizeof(draw_data.mod_text.str) - 1);

draw_data.mod_text.size = modifier_size;

draw_data.mod_text.outline_width = modifieroutlinewidth;

draw_data.mod_text.font = get_font_face(WRONG_FONT);

draw_data.mod_text.align = modif_align;

draw_data.mod_text.color = modif16;

draw_data.mod_text.outline_color = modifoutline16;

}

if (layout_text) {

draw_data.keylayout_text.show = true;

strncpy(draw_data.keylayout_text.str, layout_text, sizeof(draw_data.keylayout_text.str) - 1);

draw_data.keylayout_text.size = layout_size;

draw_data.keylayout_text.outline_width = layoutoutlinewidth;

draw_data.keylayout_text.font = get_font_face(LAYOUT_FONT);

draw_data.keylayout_text.color = layout16;

draw_data.keylayout_text.outline_color = layoutoutline16;

draw_data.keylayout_text.align = layout_align;

}

if (greeter_text) {

draw_data.greeter_text.show = true;

strncpy(draw_data.greeter_text.str, greeter_text, sizeof(draw_data.greeter_text.str) - 1);

draw_data.greeter_text.size = greeter_size;

draw_data.greeter_text.outline_width = greeteroutlinewidth;

draw_data.greeter_text.font = get_font_face(GREETER_FONT);

draw_data.greeter_text.color = greeter16;

draw_data.greeter_text.outline_color = greeteroutline16;

draw_data.greeter_text.align = greeter_align;

}

if (show_clock && (!draw_data.status_text.show || always_show_clock)) {

time_t rawtime;

struct tm *timeinfo;

time(&rawtime);

timeinfo = localtime(&rawtime);

strftime(draw_data.time_text.str, 40, time_format, timeinfo);

if (*draw_data.time_text.str) {

draw_data.time_text.show = true;

draw_data.time_text.size = time_size;

draw_data.time_text.outline_width = timeoutlinewidth;

draw_data.time_text.color = time16;

draw_data.time_text.outline_color = timeoutline16;

draw_data.time_text.font = get_font_face(TIME_FONT);

draw_data.time_text.align = time_align;

}

strftime(draw_data.date_text.str, 40, date_format, timeinfo);

if (*draw_data.date_text.str) {

draw_data.date_text.show = true;

draw_data.date_text.size = date_size;

draw_data.date_text.outline_width = dateoutlinewidth;

draw_data.date_text.color = date16;

draw_data.date_text.outline_color = dateoutline16;

draw_data.date_text.font = get_font_face(DATE_FONT);

draw_data.date_text.align = date_align;

}

if (*draw_data.greeter_text.str) {

draw_data.greeter_text.show = true;

draw_data.greeter_text.size = greeter_size;

draw_data.greeter_text.outline_width = greeteroutlinewidth;

draw_data.greeter_text.color = greeter16;

draw_data.greeter_text.outline_color = greeteroutline16;

draw_data.greeter_text.font = get_font_face(GREETER_FONT);

draw_data.greeter_text.align = greeter_align;

}

}

// initialize positioning vars

double screen_x = 0, screen_y = 0,

width = 0, height = 0;

double radius = (circle_radius + ring_width);

DEBUG("scaling_factor is %f, physical diameter is %d px\n",

scaling_factor, button_diameter_physical);

// variable mapping for evaluating the clock position expression

const unsigned int vars_size = 14;

te_variable vars[] =

{{"w", &width},

{"h", &height},

{"x", &screen_x},

{"y", &screen_y},

{"ix", &draw_data.indicator_x},

{"iy", &draw_data.indicator_y},

{"tx", &draw_data.time_text.x},

{"ty", &draw_data.time_text.y},

{"dx", &draw_data.date_text.x},

{"dy", &draw_data.date_text.y},

{"bw", &draw_data.bar_width},

{"bx", &draw_data.bar_x},

{"by", &draw_data.bar_y},

{"r", &radius}};

te_expr *te_ind_x_expr = compile_expression("--indpos", ind_x_expr, vars, vars_size);

te_expr *te_ind_y_expr = compile_expression("--indpos", ind_y_expr, vars, vars_size);

te_expr *te_time_x_expr = compile_expression("--timepos", time_x_expr, vars, vars_size);

te_expr *te_time_y_expr = compile_expression("--timepos", time_y_expr, vars, vars_size);