diff options
Diffstat (limited to 'buzzsaver.c')
| -rw-r--r-- | buzzsaver.c | 116 |
1 files changed, 99 insertions, 17 deletions
diff --git a/buzzsaver.c b/buzzsaver.c index 811f734..d547aef 100644 --- a/buzzsaver.c +++ b/buzzsaver.c @@ -7,6 +7,7 @@ #include <cairo/cairo.h> #include <cairo-xlib.h> #include <librsvg/rsvg.h> +#include <pango/pangocairo.h> #include <stdbool.h> #include <stdio.h> #include <stdlib.h> @@ -19,16 +20,24 @@ int __width, __height; static Window __window = { 0 }; static Display *__display = NULL; +static const size_t kMaxPasswordLength = 128; static const double kLogoBackgroundWidth = 300.0; typedef struct { - cairo_t *ctx; - cairo_surface_t *surface; + cairo_t *ctx; + cairo_surface_t *surface; - RsvgHandle *logo_svg_handle; + PangoLayout *pango_layout; + PangoFontDescription *status_font; - double cursor_opacity; - double cursor_fade_direction; + RsvgHandle *logo_svg_handle; + RsvgHandle *asterisk_svg_handle; + + double cursor_opacity; + double cursor_fade_direction; + + char *password_buffer; + size_t password_buffer_len; } saver_state_t; void window_changed_size(saver_state_t *state, XConfigureEvent *event) @@ -39,11 +48,31 @@ void window_changed_size(saver_state_t *state, XConfigureEvent *event) cairo_xlib_surface_set_size(state->surface, __width, __height); } +void handle_key_event(saver_state_t *state, XKeyEvent *event) +{ + KeySym key; + char keybuf[8]; + XLookupString(event, keybuf, sizeof(keybuf), &key, NULL); + printf("str: %d\n", key); + + char *password_buf = state->password_buffer; + size_t length = strlen(password_buf); + if (XK_BackSpace == key) { + // delete char + if (length > 0) { + password_buf[length - 1] = '\0'; + } + } else if (strlen(keybuf) > 0) { + size_t add_len = strlen(keybuf); + if ( (length + add_len) < state->password_buffer_len - 1 ) { + strncpy(password_buf + length, keybuf, add_len); + } + } +} + int poll_events(saver_state_t *state) { const bool block_for_next_event = false; - char keybuf[8]; - KeySym key; XEvent e; for (;;) { @@ -58,12 +87,12 @@ int poll_events(saver_state_t *state) switch (e.type) { case ConfigureNotify: window_changed_size(state, (XConfigureEvent *)&e); - return 0; + return 1; case ButtonPress: return -e.xbutton.button; case KeyPress: - XLookupString(&e.xkey, keybuf, sizeof(keybuf), &key, NULL); - return key; + handle_key_event(state, (XKeyEvent *)&e); + return 1; default: fprintf(stderr, "Dropping unhandled XEevent.type = %d.\n", e.type); } @@ -102,12 +131,10 @@ void draw_logo(saver_state_t *state) const double padding = 10.0; double scale_factor = ((kLogoBackgroundWidth - (padding * 2.0)) / dimensions.width); - cairo_scale(cr, scale_factor, scale_factor); - double scaled_height = (dimensions.height * scale_factor); double y_position = (__height - scaled_height) / 2.0; - cairo_translate(cr, padding, y_position); + cairo_scale(cr, scale_factor, scale_factor); rsvg_handle_render_cairo(state->logo_svg_handle, cr); cairo_restore(cr); @@ -115,13 +142,60 @@ void draw_logo(saver_state_t *state) void draw_password_field(saver_state_t *state) { + const double cursor_height = 40.0; + const double cursor_width = 30.0; + const double field_x = kLogoBackgroundWidth + 50.0; + const double field_y = (__height - cursor_height) / 2.0; + const double field_padding = 10.0; + cairo_t *cr = state->ctx; - cairo_set_source_rgba(cr, 1.0, 1.0, 1.0, state->cursor_opacity); - const double cursor_height = 50.0; - const double cursor_width = 30.0; - cairo_rectangle(cr, kLogoBackgroundWidth + 50.0, (__height - cursor_height) / 2.0, cursor_width, cursor_height); + // Draw status text + cairo_set_source_rgba(cr, 1.0, 1.0, 1.0, 1.0); + pango_layout_set_font_description(state->pango_layout, state->status_font); + pango_layout_set_text(state->pango_layout, "Password: ", -1); + + int t_width, t_height; + pango_layout_get_size(state->pango_layout, &t_width, &t_height); + double line_height = t_height / PANGO_SCALE; + + cairo_move_to(cr, field_x, field_y - line_height - field_padding); + pango_cairo_show_layout(cr, state->pango_layout); + + // Draw password asterisks + if (state->asterisk_svg_handle == NULL) { + GError *error = NULL; + state->asterisk_svg_handle = rsvg_handle_new_from_file("asterisk.svg", &error); + if (error != NULL) { + fprintf(stderr, "Error loading asterisk SVG\n"); + return; + } + } + + const double cursor_padding_x = 10.0; + double cursor_offset_x = 0.0; + RsvgDimensionData dimensions; + rsvg_handle_get_dimensions(state->asterisk_svg_handle, &dimensions); + + double asterisk_height = cursor_height - 20.0; + double scale_factor = (asterisk_height / dimensions.height); + double scaled_width = (dimensions.width * scale_factor); + + for (unsigned i = 0; i < strlen(state->password_buffer); i++) { + cairo_save(cr); + cairo_translate(cr, field_x + cursor_offset_x, field_y + ((cursor_height - asterisk_height) / 2.0)); + cairo_scale(cr, scale_factor, scale_factor); + rsvg_handle_render_cairo(state->asterisk_svg_handle, cr); + cairo_restore(cr); + + cursor_offset_x += scaled_width + cursor_padding_x; + } + + + // Draw cursor + cairo_set_source_rgba(cr, 1.0, 1.0, 1.0, state->cursor_opacity); + cairo_rectangle(cr, field_x + cursor_offset_x, field_y, cursor_width, cursor_height); cairo_fill(cr); } @@ -163,11 +237,19 @@ int runloop(cairo_surface_t *surface) { cairo_t *cr = cairo_create(surface); + // Initialize pango context + PangoLayout *pango_layout = pango_cairo_create_layout(cr); + PangoFontDescription *status_font = pango_font_description_from_string("Input Mono 22"); + saver_state_t state = { 0 }; state.ctx = cr; state.surface = surface; state.cursor_opacity = 1.0; state.cursor_fade_direction = -1.0; + state.pango_layout = pango_layout; + state.status_font = status_font; + state.password_buffer = calloc(1, kMaxPasswordLength); + state.password_buffer_len = kMaxPasswordLength; // Main run loop struct timespec sleep_time = { 0, 5000000 }; |