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git://projects.qi-hardware.com/ben-blinkenlights.git
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ubb-la/gui.c: add user-defined zero reference (set/unset with space)
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parent
5b050b4b36
commit
b99c81409f
58
ubb-la/gui.c
58
ubb-la/gui.c
@ -41,6 +41,7 @@
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#define MAP_BUF_RGBA 0x808080ff /* buffer in the map */
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#define MAP_VIEW_RGBA 0xffffffff /* current view in the map */
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#define CENTER_RGBA 0x5080ffff /* center marker */
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#define USER_REF_RGBA 0x00ff40ff /* user reference marker */
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#define LEVEL_RGBA 0xffff00ff /* constant level or single change */
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#define BOUNCE_RGBA 0xff8080ff /* bouncing signal */
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#define LABEL_RGBA 0xffffffff /* channel label */
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@ -60,7 +61,11 @@
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#define CENTER_W 8
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#define CENTER_Y0 20
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#define CENTER_Y1 24
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#define CENTER_Y1 (CENTER_Y0+4)
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#define USER_REF_W 8
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#define USER_REF_Y0 92
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#define USER_REF_Y1 (USER_REF_Y0+4)
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#define CH_XOFF 30
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#define CH_YOFF 30
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@ -74,8 +79,8 @@
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#define UNIT_GAP 2 /* space between number and unit */
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#define POS_T_X 176
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#define POS_SAMP_X 264
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#define POS_T_X 182
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#define POS_SAMP_X 270
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#define POS_Y (MEAS_DIV_Y-8-3)
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#define MEAS_DIV_Y (FREQ_Y-3-1)
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@ -89,6 +94,13 @@
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#define DIV_INT_X 80
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#define DIV_INT_Y INTERVAL_Y
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#define USER_T_X POS_T_X
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#define USER_T_Y FREQ_Y
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#define USER_SAMP_X POS_SAMP_X
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#define USER_SAMP_Y USER_T_Y
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#define USER_FREQ_X POS_T_X
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#define USER_FREQ_Y (USER_T_Y+8+2)
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/* ----- Miscellaneous definitions ----------------------------------------- */
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@ -97,6 +109,7 @@
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#define REPEAT_INTERVAL_MS 30
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static SDL_Surface *surf;
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static int user_ref = -1;
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/* ----- SDL initialization and screen-wide functions ---------------------- */
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@ -294,14 +307,25 @@ static void show_buffer_zoom_out(const uint8_t *buf, int skip, int nibbles,
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}
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static void user_ref_marker(int x0, int x1, int x)
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{
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if (x < 0 || x > x1-x0)
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return;
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filledTrigonColor(surf, x0+x, USER_REF_Y0,
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x0+x-USER_REF_W/2, USER_REF_Y1,
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x0+x+USER_REF_W/2, USER_REF_Y1, USER_REF_RGBA);
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}
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static void show_buffer(const uint8_t *buf, int skip, int nibbles,
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int x0, int x1, int zoom, int pos)
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{
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int xm, w, s, p0, p1;
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int d, dp;
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int d, dp, ref;
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xm = (x0+x1) >> 1;
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dp = pos-((nibbles-skip) >> 1);
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ref = user_ref+skip;
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DEBUG("show: %d-%d Sa; %d-%d pix; pos %d dp %d; xm %d xcenter %d\n",
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skip, nibbles, x0, x1, pos, dp, xm, XCENTER);
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if (zoom < 0) {
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@ -319,6 +343,8 @@ static void show_buffer(const uint8_t *buf, int skip, int nibbles,
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p1 = x1;
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}
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show_buffer_zoom_out(buf, skip, nibbles, p0, p1);
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if (user_ref != -1)
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user_ref_marker(p0, p1, (ref-skip) >> -zoom);
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} else {
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s = (x1-x0) >> zoom;
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show_map(skip, nibbles, pos-s/2, pos+s/2);
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@ -336,6 +362,8 @@ static void show_buffer(const uint8_t *buf, int skip, int nibbles,
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p1 -= d << zoom;
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}
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show_buffer_zoom_in(buf, skip, nibbles, p0, p1);
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if (user_ref != -1)
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user_ref_marker(p0, p1, (ref-skip) << zoom);
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}
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}
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@ -404,6 +432,20 @@ static void show_position(double freq, int pos)
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}
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static void show_user_ref(double freq, int pos, int user_ref)
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{
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si_text(USER_T_X, USER_T_Y, fabs(user_ref-pos)/freq, "s", 7);
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textf(USER_SAMP_X,USER_SAMP_Y, TEXT_RGBA, "%4d",
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pos > user_ref ? pos-user_ref : user_ref-pos);
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textf(USER_SAMP_X+4*8+UNIT_GAP, USER_SAMP_Y, UNIT_RGBA, "Sa", div);
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if (pos != user_ref)
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si_text(USER_FREQ_X, USER_FREQ_Y,
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freq/fabs(user_ref-pos), "Hz", 7);
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}
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/* ----- Show divisions ---------------------------------------------------- */
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@ -450,6 +492,8 @@ void gui(const uint8_t *buf, int skip, int nibbles, double freq)
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show_buffer(buf, skip, nibbles, CH_XOFF, XRES, zoom, pos);
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show_freq(freq, zoom);
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show_position(freq, pos);
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if (user_ref != -1)
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show_user_ref(freq, pos, user_ref);
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update();
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while (1) {
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@ -475,6 +519,12 @@ void gui(const uint8_t *buf, int skip, int nibbles, double freq)
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if (pos > nibbles-skip-1)
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pos = nibbles-skip-1;
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break;
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case SDLK_SPACE:
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if (pos == user_ref)
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user_ref = -1;
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else
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user_ref = pos;
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break;
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case SDLK_RETURN:
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case SDLK_q:
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return;
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