forked from bartvdbraak/blender
mango request
- optionally display the histogram as lines (not filled areas). - expand the enum for faster access. - keep the sample line displayed after doing the line sample (running again clears).
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6ba5650428
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5e29381825
@ -502,9 +502,12 @@ class IMAGE_PT_view_histogram(Panel):
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layout = self.layout
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sima = context.space_data
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hist = sima.scopes.histogram
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layout.template_histogram(sima.scopes, "histogram")
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layout.prop(sima.scopes.histogram, "mode", icon_only=True)
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row = layout.row(align=True)
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row.prop(hist, "mode", icon_only=True, expand=True)
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row.prop(hist, "show_line", text="")
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class IMAGE_PT_view_waveform(Panel):
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@ -560,10 +563,13 @@ class IMAGE_PT_sample_line(Panel):
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layout = self.layout
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sima = context.space_data
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hist = sima.sample_histogram
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layout.operator("image.sample_line")
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layout.template_histogram(sima, "sample_histogram")
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layout.prop(sima.sample_histogram, "mode")
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row = layout.row(align=True)
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row.prop(hist, "mode", expand=True)
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row.prop(hist, "show_line", text="")
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class IMAGE_PT_scope_sample(Panel):
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@ -658,37 +658,59 @@ static void draw_scope_end(rctf *rect, GLint *scissor)
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}
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static void histogram_draw_one(float r, float g, float b, float alpha,
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float x, float y, float w, float h, float *data, int res)
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float x, float y, float w, float h, float *data, int res, const short is_line)
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{
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int i;
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/* under the curve */
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glBlendFunc(GL_SRC_ALPHA, GL_ONE);
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glColor4f(r, g, b, alpha);
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glShadeModel(GL_FLAT);
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glBegin(GL_QUAD_STRIP);
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glVertex2f(x, y);
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glVertex2f(x, y + (data[0] * h));
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for (i = 1; i < res; i++) {
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float x2 = x + i * (w / (float)res);
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glVertex2f(x2, y + (data[i] * h));
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glVertex2f(x2, y);
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if (is_line) {
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glLineWidth(1.5);
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glBlendFunc(GL_SRC_ALPHA, GL_ONE);
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glColor4f(r, g, b, alpha);
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/* curve outline */
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glBlendFunc(GL_SRC_ALPHA, GL_ONE);
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glEnable(GL_LINE_SMOOTH);
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glBegin(GL_LINE_STRIP);
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for (i = 0; i < res; i++) {
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float x2 = x + i * (w / (float)res);
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glVertex2f(x2, y + (data[i] * h));
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}
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glEnd();
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glDisable(GL_LINE_SMOOTH);
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glLineWidth(1.0);
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}
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glEnd();
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/* curve outline */
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glColor4f(0.f, 0.f, 0.f, 0.25f);
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glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
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glEnable(GL_LINE_SMOOTH);
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glBegin(GL_LINE_STRIP);
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for (i = 0; i < res; i++) {
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float x2 = x + i * (w / (float)res);
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glVertex2f(x2, y + (data[i] * h));
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else {
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/* under the curve */
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glBlendFunc(GL_SRC_ALPHA, GL_ONE);
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glColor4f(r, g, b, alpha);
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glShadeModel(GL_FLAT);
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glBegin(GL_QUAD_STRIP);
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glVertex2f(x, y);
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glVertex2f(x, y + (data[0] * h));
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for (i = 1; i < res; i++) {
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float x2 = x + i * (w / (float)res);
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glVertex2f(x2, y + (data[i] * h));
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glVertex2f(x2, y);
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}
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glEnd();
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/* curve outline */
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glColor4f(0.f, 0.f, 0.f, 0.25f);
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glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
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glEnable(GL_LINE_SMOOTH);
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glBegin(GL_LINE_STRIP);
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for (i = 0; i < res; i++) {
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float x2 = x + i * (w / (float)res);
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glVertex2f(x2, y + (data[i] * h));
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}
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glEnd();
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glDisable(GL_LINE_SMOOTH);
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}
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glEnd();
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glDisable(GL_LINE_SMOOTH);
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}
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void ui_draw_but_HISTOGRAM(ARegion *ar, uiBut *but, uiWidgetColors *UNUSED(wcol), rcti *recti)
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@ -698,6 +720,7 @@ void ui_draw_but_HISTOGRAM(ARegion *ar, uiBut *but, uiWidgetColors *UNUSED(wcol)
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rctf rect;
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int i;
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float w, h;
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const short is_line = (hist->flag & HISTO_FLAG_LINE) != 0;
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//float alpha;
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GLint scissor[4];
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@ -731,14 +754,14 @@ void ui_draw_but_HISTOGRAM(ARegion *ar, uiBut *but, uiWidgetColors *UNUSED(wcol)
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}
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if (hist->mode == HISTO_MODE_LUMA)
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histogram_draw_one(1.0, 1.0, 1.0, 0.75, rect.xmin, rect.ymin, w, h, hist->data_luma, res);
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histogram_draw_one(1.0, 1.0, 1.0, 0.75, rect.xmin, rect.ymin, w, h, hist->data_luma, res, is_line);
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else {
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if (hist->mode == HISTO_MODE_RGB || hist->mode == HISTO_MODE_R)
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histogram_draw_one(1.0, 0.0, 0.0, 0.75, rect.xmin, rect.ymin, w, h, hist->data_r, res);
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histogram_draw_one(1.0, 0.0, 0.0, 0.75, rect.xmin, rect.ymin, w, h, hist->data_r, res, is_line);
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if (hist->mode == HISTO_MODE_RGB || hist->mode == HISTO_MODE_G)
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histogram_draw_one(0.0, 1.0, 0.0, 0.75, rect.xmin, rect.ymin, w, h, hist->data_g, res);
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histogram_draw_one(0.0, 1.0, 0.0, 0.75, rect.xmin, rect.ymin, w, h, hist->data_g, res, is_line);
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if (hist->mode == HISTO_MODE_RGB || hist->mode == HISTO_MODE_B)
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histogram_draw_one(0.0, 0.0, 1.0, 0.75, rect.xmin, rect.ymin, w, h, hist->data_b, res);
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histogram_draw_one(0.0, 0.0, 1.0, 0.75, rect.xmin, rect.ymin, w, h, hist->data_b, res, is_line);
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}
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/* outline, scale gripper */
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@ -578,6 +578,28 @@ void draw_image_grease_pencil(bContext *C, short onlyv2d)
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}
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}
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void draw_image_sample_line(SpaceImage *sima)
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{
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if (sima->sample_line_hist.flag & HISTO_FLAG_SAMPLELINE) {
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Histogram *hist = &sima->sample_line_hist;
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glBegin(GL_LINES);
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glColor3ub(0, 0, 0);
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glVertex2fv(hist->co[0]);
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glVertex2fv(hist->co[1]);
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glEnd();
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setlinestyle(1);
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glBegin(GL_LINES);
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glColor3ub(255, 255, 255);
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glVertex2fv(hist->co[0]);
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glVertex2fv(hist->co[1]);
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glEnd();
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setlinestyle(0);
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}
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}
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/* XXX becomes WM paint cursor */
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#if 0
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static void draw_image_view_tool(Scene *scene)
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@ -54,6 +54,7 @@ extern const char *image_context_dir[]; /* doc access */
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/* image_draw.c */
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void draw_image_main(struct SpaceImage *sima, struct ARegion *ar, struct Scene *scene);
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void draw_image_grease_pencil(struct bContext *C, short onlyv2d);
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void draw_image_sample_line(struct SpaceImage *sima);
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/* image_ops.c */
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int space_image_main_area_poll(struct bContext *C);
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@ -2137,7 +2137,14 @@ static int image_sample_line_exec(bContext *C, wmOperator *op)
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hist->x_resolution = 256;
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hist->xmax = 1.0f;
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hist->ymax = 1.0f;
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/* persistent draw */
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hist->co[0][0] = x1f;
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hist->co[0][1] = y1f;
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hist->co[1][0] = x2f;
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hist->co[1][1] = y2f;
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hist->flag |= HISTO_FLAG_SAMPLELINE; /* keep drawing the flag after */
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for (i = 0; i < 256; i++) {
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x = (int)(0.5f + x1 + (float)i * (x2 - x1) / 255.0f);
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y = (int)(0.5f + y1 + (float)i * (y2 - y1) / 255.0f);
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@ -2179,7 +2186,10 @@ static int image_sample_line_exec(bContext *C, wmOperator *op)
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static int image_sample_line_invoke(bContext *C, wmOperator *op, wmEvent *event)
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{
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SpaceImage *sima = CTX_wm_space_image(C);
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Histogram *hist = &sima->sample_line_hist;
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hist->flag &= ~HISTO_FLAG_SAMPLELINE;
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if (!ED_space_image_has_buffer(sima))
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return OPERATOR_CANCELLED;
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@ -824,15 +824,18 @@ static void image_main_area_draw(const bContext *C, ARegion *ar)
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draw_uvedit_main(sima, ar, scene, obedit, obact);
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ED_region_draw_cb_draw(C, ar, REGION_DRAW_POST_VIEW);
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/* Grease Pencil too (in addition to UV's) */
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draw_image_grease_pencil((bContext *)C, 1);
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/* sample line */
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draw_image_sample_line(sima);
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UI_view2d_view_restore(C);
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/* draw Grease Pencil - screen space only */
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draw_image_grease_pencil((bContext *)C, 0);
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/* scrollers? */
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#if 0
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scrollers = UI_view2d_scrollers_calc(C, v2d, V2D_UNIT_VALUES, V2D_GRID_CLAMP, V2D_ARG_DUMMY, V2D_ARG_DUMMY);
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@ -102,6 +102,11 @@ typedef enum CurveMappingPreset {
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#define HISTO_MODE_G 3
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#define HISTO_MODE_B 4
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enum {
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HISTO_FLAG_LINE = (1 << 0),
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HISTO_FLAG_SAMPLELINE = (1 << 1)
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};
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typedef struct Histogram {
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int channels;
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int x_resolution;
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@ -110,8 +115,13 @@ typedef struct Histogram {
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float data_b[256];
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float data_luma[256];
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float xmax, ymax;
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int mode;
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short mode;
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short flag;
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int height;
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/* sample line only */
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/* image coords src -> est */
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float co[2][2];
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} Histogram;
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struct ImBuf;
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@ -570,11 +570,11 @@ static void rna_def_histogram(BlenderRNA *brna)
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PropertyRNA *prop;
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static EnumPropertyItem prop_mode_items[] = {
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{HISTO_MODE_LUMA, "LUMA", ICON_COLOR, "Luma", ""},
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{HISTO_MODE_RGB, "RGB", ICON_COLOR, "Red Green Blue", ""},
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{HISTO_MODE_R, "R", ICON_COLOR, "Red", ""},
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{HISTO_MODE_G, "G", ICON_COLOR, "Green", ""},
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{HISTO_MODE_B, "B", ICON_COLOR, "Blue", ""},
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{HISTO_MODE_LUMA, "LUMA", 0, "Luma", "Luma"},
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{HISTO_MODE_RGB, "RGB", 0, "RGB", "Red Green Blue"},
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{HISTO_MODE_R, "R", 0, "R", "Red"},
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{HISTO_MODE_G, "G", 0, "G", "Green"},
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{HISTO_MODE_B, "B", 0, "B", "Blue"},
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{0, NULL, 0, NULL, NULL}
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};
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@ -585,7 +585,11 @@ static void rna_def_histogram(BlenderRNA *brna)
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RNA_def_property_enum_sdna(prop, NULL, "mode");
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RNA_def_property_enum_items(prop, prop_mode_items);
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RNA_def_property_ui_text(prop, "Mode", "Channels to display when drawing the histogram");
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prop = RNA_def_property(srna, "show_line", PROP_BOOLEAN, PROP_NONE);
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RNA_def_property_boolean_sdna(prop, NULL, "flag", HISTO_FLAG_LINE);
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RNA_def_property_ui_text(prop, "Show Line", "Displays lines rather then filled shapes");
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RNA_def_property_ui_icon(prop, ICON_IPO, 0);
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}
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static void rna_def_scopes(BlenderRNA *brna)
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