diff options
| -rw-r--r-- | test/unittest_images.cxx | 238 |
1 files changed, 168 insertions, 70 deletions
diff --git a/test/unittest_images.cxx b/test/unittest_images.cxx index 43e21b6f1..80ded9c47 100644 --- a/test/unittest_images.cxx +++ b/test/unittest_images.cxx @@ -16,7 +16,10 @@ // http://www.fltk.org/str.php // -#include <FL/Fl_Box.H> +#include <FL/Fl_Group.H> +#include <FL/Fl_Button.H> +#include <FL/Fl_Radio_Button.H> +#include <FL/Fl_Check_Button.H> #include <FL/fl_draw.H> // Note: currently (March 2010) fl_draw_image() supports transparency with @@ -30,22 +33,22 @@ // Parameters for fine tuning for developers. // Default values: CB=1, DX=0, IMG=1, LX=0, FLIPH=0 -#define CB (1) // 1 to show the checker board background for alpha images, - // 0 otherwise -#define DX (0) // additional (undefined (0)) pixels per line, must be >= 0 - // ignored (irrelevant), if LX == 0 (see below) -#define IMG (1) // 1 to use Fl_RGB_Image for drawing images with transparency, - // 0 to use fl_draw_image() instead. - // Note: as of Feb 2016, only 1 (Fl_RGB_Image) works with - // alpha channel, 0 (fl_draw_image()) ignores the alpha - // channel (FLTK 1.3.x). - // There are plans to support transparency (alpha channel) - // in fl_draw_image() in FLTK 1.4.0 and/or later. -#define LX (0) // 0 for default: ld() = 0, i.e. ld() defaults (internally) to w()*d() - // +1: ld() = (w() + DX) * d() - // -1 to flip image vertically: ld() = - ((w() + DX) * d()) -#define FLIPH (0) // 1 = Flip image horizontally (only if IMG == 0) - // 0 = Draw image normal, w/o horizontal flipping +static int CB = 1; // 1 to show the checker board background for alpha images, + // 0 otherwise +static int DX = 0; // additional (undefined (0)) pixels per line, must be >= 0 + // ignored (irrelevant), if LX == 0 (see below) +static int IMG = 1; // 1 to use Fl_RGB_Image for drawing images with transparency, + // 0 to use fl_draw_image() instead. + // Note: as of Feb 2016, only 1 (Fl_RGB_Image) works with + // alpha channel, 0 (fl_draw_image()) ignores the alpha + // channel (FLTK 1.3.x). + // There are plans to support transparency (alpha channel) + // in fl_draw_image() in FLTK 1.4.0 and/or later. +static int LX = 0; // 0 for default: ld() = 0, i.e. ld() defaults (internally) to w()*d() + // +1: ld() = (w() + DX) * d() + // -1 to flip image vertically: ld() = - ((w() + DX) * d()) +static int FLIPH = 0; // 1 = Flip image horizontally (only if IMG == 0) + // 0 = Draw image normal, w/o horizontal flipping // ---------------------------------------------------------------------- // Test scenario for fl_draw_image() with pos. and neg. d and ld args: @@ -57,16 +60,14 @@ // (5) set FLIPH = 0, IMG = 1: back to default (with transparency) // ---------------------------------------------------------------------- - -class ImageTest : public Fl_Box { -public: - static Fl_Widget *create() { +class ImageTest : public Fl_Group { + static void build_imgs() { int x, y; uchar *dg, *dga, *drgb, *drgba; - dg = img_gray = (uchar*)malloc((128+DX)*128*1); - dga = img_gray_a = (uchar*)malloc((128+DX)*128*2); - drgb = img_rgb = (uchar*)malloc((128+DX)*128*3); - drgba = img_rgba = (uchar*)malloc((128+DX)*128*4); + dg = img_gray = img_gray_base = (uchar*)malloc((128+DX)*128*1); + dga = img_gray_a = img_gray_a_base = (uchar*)malloc((128+DX)*128*2); + drgb = img_rgb = img_rgb_base = (uchar*)malloc((128+DX)*128*3); + drgba = img_rgba = img_rgba_base = (uchar*)malloc((128+DX)*128*4); for (y=0; y<128; y++) { for (x=0; x<128; x++) { *drgba++ = *drgb++ = *dga++ = *dg++ = y<<1; @@ -97,8 +98,45 @@ public: i_ga = new Fl_RGB_Image (img_gray_a,128,128,2,LX*(128+DX)*2); i_rgb = new Fl_RGB_Image (img_rgb, 128,128,3,LX*(128+DX)*3); i_rgba = new Fl_RGB_Image (img_rgba, 128,128,4,LX*(128+DX)*4); - return new ImageTest(TESTAREA_X, TESTAREA_Y, TESTAREA_W, TESTAREA_H); + } // build_imgs method ends + + void free_images() { + if (i_rgba) { delete i_rgba; i_rgba = 0; } + if (i_rgb) { delete i_rgb; i_rgb = 0; } + if (i_ga) { delete i_ga; i_ga = 0; } + if (i_g) { delete i_g; i_g = 0; } + if (img_rgba_base) { free (img_rgba_base); img_rgba_base = 0; } + if (img_rgb_base) { free (img_rgb_base); img_rgb_base = 0; } + if (img_gray_a_base) { free (img_gray_a_base); img_gray_a_base = 0; } + if (img_gray_base) { free (img_gray_base); img_gray_base = 0; } + } // end of free_images method + + static void refresh_imgs_CB(Fl_Widget*,void *data) { + ImageTest *it = (ImageTest*)data; + it->free_images(); // release the previous images + // determine the state for the next images + CB = it->ck_CB->value(); + IMG = it->ck_IMG->value(); + FLIPH = it->ck_FLIPH->value(); + // read the LX state radio buttons + if (it->rb_LXp1->value()) { LX = 1; } + else if (it->rb_LXm1->value()) { LX = (-1); } + else { LX = 0; } + // construct the next images + build_imgs(); + it->redraw(); } + +public: + static Fl_Widget *create() { + build_imgs(); + return new ImageTest(TESTAREA_X, TESTAREA_Y, TESTAREA_W, TESTAREA_H); + } // create method ends + + static uchar *img_gray_base; + static uchar *img_gray_a_base; + static uchar *img_rgb_base; + static uchar *img_rgba_base; static uchar *img_gray; static uchar *img_gray_a; static uchar *img_rgb; @@ -107,29 +145,76 @@ public: static Fl_RGB_Image *i_ga; static Fl_RGB_Image *i_rgb; static Fl_RGB_Image *i_rgba; - ImageTest(int x, int y, int w, int h) : Fl_Box(x, y, w, h) { + + // control widgets + Fl_Group *ctr_grp; + Fl_Check_Button *ck_CB; + Fl_Check_Button *ck_IMG; + Fl_Check_Button *ck_FLIPH; + Fl_Radio_Button *rb_LXm1; + Fl_Radio_Button *rb_LX0; + Fl_Radio_Button *rb_LXp1; + Fl_Button *refresh; + + ImageTest(int x, int y, int w, int h) : Fl_Group(x, y, w, h) { label("Testing Image Drawing\n\n" "This test renders four images, two of them with a checker board\n" "visible through the graphics. Color and gray gradients should be\n" "visible. This does not test any image formats such as JPEG."); align(FL_ALIGN_INSIDE|FL_ALIGN_BOTTOM|FL_ALIGN_LEFT|FL_ALIGN_WRAP); box(FL_BORDER_BOX); - } + int cw = 90; + int ch = 270; + int cx = x + w - cw - 5; + int cy = y + 10; + ctr_grp = new Fl_Group(cx, cy, cw, ch); + + ck_CB = new Fl_Check_Button(cx+10, cy+10, cw-20, 30, "CB"); + ck_CB->value(CB); + + ck_IMG = new Fl_Check_Button(cx+10, cy+40, cw-20, 30, "IMG"); + ck_IMG->value(IMG); + + ck_FLIPH = new Fl_Check_Button(cx+10, cy+70, cw-20, 30, "FLIPH"); + ck_FLIPH->value(FLIPH); + + Fl_Group *rd_grp = new Fl_Group(cx+10, cy+100, cw-20, 90, "LX"); + + rb_LXp1 = new Fl_Radio_Button(cx+15, cy+105, cw-30, 20, "+1"); + rb_LX0 = new Fl_Radio_Button(cx+15, cy+125, cw-30, 20, "0"); + rb_LXm1 = new Fl_Radio_Button(cx+15, cy+145, cw-30, 20, "-1"); + rb_LX0->value(1); + + rd_grp->box(FL_BORDER_BOX); + rd_grp->align(FL_ALIGN_INSIDE|FL_ALIGN_BOTTOM|FL_ALIGN_CENTER); + rd_grp->end(); + + refresh = new Fl_Button(cx+10, cy+ch-40, cw-20, 30, "Refresh"); + refresh->callback(refresh_imgs_CB, (void*)this); + + ctr_grp->box(FL_BORDER_BOX); + ctr_grp->end(); + end(); // make sure this ImageTest group is closed + } // constructor ends + void draw() { - Fl_Box::draw(); + Fl_Group::draw(); // top left: RGB int xx = x()+10, yy = y()+10; fl_color(FL_BLACK); fl_rect(xx, yy, 130, 130); -#if IMG - i_rgb->draw(xx+1,yy+1); -#else - if (!FLIPH) - fl_draw_image(img_rgb, xx+1, yy+1, 128, 128, 3, LX*((128+DX)*3)); - else - fl_draw_image(img_rgb, xx+1, yy+1, 128, 128,-3, LX*((128+DX)*3)); -#endif + if (IMG) { + i_rgb->draw(xx+1,yy+1); + } + else { + if (!FLIPH) { + fl_draw_image(img_rgb, xx+1, yy+1, 128, 128, 3, LX*((128+DX)*3)); + } + else { + fl_draw_image(img_rgb, xx+1, yy+1, 128, 128,-3, LX*((128+DX)*3)); + } + } fl_draw("RGB", xx+134, yy+64); // bottom left: RGBA @@ -137,32 +222,38 @@ public: xx = x()+10; yy = y()+10+134; fl_color(FL_BLACK); fl_rect(xx, yy, 130, 130); // black frame fl_color(FL_WHITE); fl_rectf(xx+1, yy+1, 128, 128); // white background -#if CB // checker board - fl_color(FL_BLACK); fl_rectf(xx+65, yy+1, 64, 64); - fl_color(FL_BLACK); fl_rectf(xx+1, yy+65, 64, 64); -#endif -#if IMG - i_rgba->draw(xx+1,yy+1); -#else - if (!FLIPH) - fl_draw_image(img_rgba, xx+1, yy+1, 128, 128, 4, LX*((128+DX)*4)); - else - fl_draw_image(img_rgba, xx+1, yy+1, 128, 128,-4, LX*((128+DX)*4)); -#endif + if (CB) { // checker board + fl_color(FL_BLACK); fl_rectf(xx+65, yy+1, 64, 64); + fl_color(FL_BLACK); fl_rectf(xx+1, yy+65, 64, 64); + } + if (IMG) { + i_rgba->draw(xx+1,yy+1); + } + else { + if (!FLIPH) { + fl_draw_image(img_rgba, xx+1, yy+1, 128, 128, 4, LX*((128+DX)*4)); + } + else { + fl_draw_image(img_rgba, xx+1, yy+1, 128, 128,-4, LX*((128+DX)*4)); + } + } fl_color(FL_BLACK); fl_draw("RGBA", xx+134, yy+64); // top right: Gray xx = x()+10+200; yy = y()+10; fl_color(FL_BLACK); fl_rect(xx, yy, 130, 130); -#if IMG - i_g->draw(xx+1,yy+1); -#else - if (!FLIPH) - fl_draw_image(img_gray, xx+1, yy+1, 128, 128, 1, LX*((128+DX)*1)); - else - fl_draw_image(img_gray, xx+1, yy+1, 128, 128,-1, LX*((128+DX)*1)); -#endif + if (IMG) { + i_g->draw(xx+1,yy+1); + } + else { + if (!FLIPH) { + fl_draw_image(img_gray, xx+1, yy+1, 128, 128, 1, LX*((128+DX)*1)); + } + else { + fl_draw_image(img_gray, xx+1, yy+1, 128, 128,-1, LX*((128+DX)*1)); + } + } fl_draw("Gray", xx+134, yy+64); // bottom right: Gray+Alpha @@ -170,22 +261,29 @@ public: xx = x()+10+200; yy = y()+10+134; fl_color(FL_BLACK); fl_rect(xx, yy, 130, 130); // black frame fl_color(FL_WHITE); fl_rectf(xx+1, yy+1, 128, 128); // white background -#if CB // checker board - fl_color(FL_BLACK); fl_rectf(xx+65, yy+1, 64, 64); - fl_color(FL_BLACK); fl_rectf(xx+1, yy+65, 64, 64); -#endif -#if IMG - i_ga->draw(xx+1,yy+1); -#else - if (!FLIPH) - fl_draw_image(img_gray_a, xx+1, yy+1, 128, 128, 2, LX*((128+DX)*2)); - else - fl_draw_image(img_gray_a, xx+1, yy+1, 128, 128,-2, LX*((128+DX)*2)); -#endif + if (CB) { // checker board + fl_color(FL_BLACK); fl_rectf(xx+65, yy+1, 64, 64); + fl_color(FL_BLACK); fl_rectf(xx+1, yy+65, 64, 64); + } + if (IMG) { + i_ga->draw(xx+1,yy+1); + } + else { + if (!FLIPH) { + fl_draw_image(img_gray_a, xx+1, yy+1, 128, 128, 2, LX*((128+DX)*2)); + } + else { + fl_draw_image(img_gray_a, xx+1, yy+1, 128, 128,-2, LX*((128+DX)*2)); + } + } fl_color(FL_BLACK); fl_draw("Gray+Alpha", xx+134, yy+64); - } + } // draw method end }; +uchar *ImageTest::img_gray_base = 0; +uchar *ImageTest::img_gray_a_base = 0; +uchar *ImageTest::img_rgb_base = 0; +uchar *ImageTest::img_rgba_base = 0; uchar *ImageTest::img_gray = 0; uchar *ImageTest::img_gray_a = 0; uchar *ImageTest::img_rgb = 0; |